(a) Write two points of difference between electric energy and electric power. 60 = 4 x R = 15 Ω. Answer. 04. ₹ 85.00  ( 57% off ), Price on Amazon.in The … Answer. Answer. Class 10 Science Electricity Very Short Answer Type Questions [1 Mark] – Year 2015. An arrangement for maintaining the continuous flow of electric current by the electrical energy source through the various electrical components connected with each other by conducting wires is termed as electric circuit. Answer: Option D. Practice Test: Question Set - 02 1. B. Ampere-volts. I = 500/600 = 5/6A, Class 10 Science Electricity Long Answer Type Question [5 Marks] – Year 2009. (b) The filament of bulb when it glows at 2700°C does not get burnt because the tungsten metal of filament has In series, same current flows through each resistor. (a) Conventional direction of electric current is opposite to the direction of flow of electrons in a wire. In the given graph, wire A has greater slope then B. This means the resistors must be connected in parallel. Mathematically, resistivity of the conducting material is given by Answer. (c) between A and B. 2V each connected to a key, an ammeter and two resistors of 2 Ω and Class 10 Science Electricity Very Short Answer Type Questions [1 Mark] – Year 2013, 15. 47.Consider the circuit shown in the diagram. 14. 3.Study the following electric circuit and find (i) the current flowing in the circuit and (ii) the potential difference across 10 Ω resistor. equivalent load resistance is equal to the standstill reactance of the motor, The Practice Test: Question Set - 01 1. .’. ₹ 1,196.00  ( 39% off ), Price on ObjectiveBooks.com Derive its S.I. Plug the key again and note the ammeter reading. (ii)In parallel combination, potential difference across each resistance will remain same. Power consumed by 30 Ω = I2R = (0.2)2 x 30=1.2W. 45.Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. 1. 0 . Answer. Which one of the above sets of readings can be rejected? In an electrical circuit two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. Answer. An open circuit does not carry any current, while a closed circuit carries current. Explain RLC circuit? (i) Will the bulbs in both the circuits glow with the same brightness? Answer: b. Class 10 Science Electricity Short Answer Type Questions[ll] [3 Marks] – Year 2012, 25. (c) Kilowatt hour – Commercial unit of electrical energy Accordingly, more change in temperature is observed in the nichrome wire. (iii) Equivalent resistance of the Circuit (a) (i) Wires crossing without touching each other. (a) Calculate the resistance of 1 km long copper wire of radius 1 mm. (c) between C and D. (d) between B and C. Question Bank for NEET Physics Current Electricity, Charging & Discharging Of Capacitors ... Self Evaluation Test - Current Elec.. Class 10 Science Electricity Short Answer Type Questions[ll] [3 Marks] – Year 2009, 58. As it is obtained by rubbing two substance such as glass and silk it is also called frictional electricity. (a) For identical bulbs in series- same current, same potential difference. (a) Though same current flows through the electric line wires and the filament of bulb, yet only the filament glows. Circuits and Practical Electric Circuitry December 14, 2015 July 3, 2012 by Mini Physics This quiz contains practice questions for GCE ‘O’ level topics: Static Electricity , Current Electricity , D.C. Practice Problems for Electricity Class 10 You are here. 44.Five resistors are connected in a circuit as shown. Answer. So, when A is double, resistance becomes half, current will be doubled. Answer. Write the SI unit of resistivity. Three bulbs each having power P are connected in series in an electric circuit. (Charge on electron 1.6 X 10-19 coulomb). (i) Draw a closed circuit diagram consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key. Quiz: Practice Test Questions On Electricity! The unit tests, chapter wise solved papers, important questions, and questions asked in previous year exams are included in CBSE test papers and CBSE practice papers with solution and answer keys. Series arrangements are not used for domestic circuit because. These reading give us current flowing through the resistors. 53. (v) Option (a) is correct. Answer. 40. 18.Find the current flowing through the following electric circuit. Don't refresh. (Assume that the resistance of the bulb remain unchanged.) Practical Electrical General Knowledge Questions - Set 05, Increases 3 Ω respectively in series and a voltmeter to measure potential difference across 3 Visit now & practice these important questions. What do you mean by electric current? What conclusion do you draw from these values? (iii) the voltage across 7 Ω resistor. Potential difference between two points is. motor, Adding (i) Current in each resistor, 8.State Ohm’s law. = 3600000 J = 3.6 x106J. Connect the cell, an ammeter and plug key in series with nichrome wire of length T (marked 1) in the gap XY as shown. If both wires are of same length and same thickness, which of the two is made of a material of high resistivity? their materials are different which one would you use as (a) resistance wire (b) connecting wire? 2.What are the types of electricity ? 5. (c) Ohm’s law : When the physical conditions such as temperature etc. Replace the marked 1 wire with another nichrome wire having same area of cross-section (thickness) but of double length’2l’ (marked 2). Let V be the potential difference applied by cell across the ends of a wire. Three bulbs are connected in a circuit as shown below. Find the equivalent resistance of the combination. Since unit length and unit area of cross-section forms a cube, the specific resistance or resistivity can also be defined as the resistance offered by a cube of a material of side 1 m when current flows perpendicularly through the opposite faces. Answer: Option C State the law which explains the above observation. (a) Electric power: It is the rate of doing work by an energy source or the rate at which the electrical energy is dissipated or consumed per unit time in the electric circuit is called electric power. So, resistance is directly proportional to length. The more you practice the better you perform. opposite to the direction of flow of electrons. What is meant by electric current? Direction of flow of electrons gives the direction of electronic current by convention, the direction of flow of positive charge is taken as the direction of conventional current. Take this free Practice exam to get a sample of the types of questions on an actual Journeyman Electrician's Exam.. Class 10 Science Electricity Very Short Answer Type Questions [1 Mark] – Year 2011, 30. Answer. So, ratio of current is 1 : 1. Power of the bulb, Class 10 Science Electricity Long Answer Type Questions [5 Marks] – Year 2013. 2. Electricity Chapter wise important question for Class 10 Science will help you in scoring more marks.. (b) State the relationship between the electric current, the charge moving through a conductor and the time of flow. The filament of bulb glows because it becomes red hot due to large amount of Answer. Also refer to other worksheets for the same chapter and other subjects too. 32. What is meant by this statement? Answer. From Ohm’s law, V = IR Electric Current: The amount of charge ‘Q’ flowing through a particular area of cross section in unit time ‘t’ is called electric current, i.e. (ii)Following graph was plotted between V and I values : (ii) State the changes that are observed in the ammeter reading if we double the area of cross-section without changing the length in the above experiment. Why star delta starter is preferred with induction motor? Frequently asked interview questions with answers under the subjects like electrical machines,Transmission and distribution,Power electronics and some general basic questions. If R1 = R2 =R3 = R4= R5 = 3 Ω, find the equivalent resistance(Rs) of the circuit. Plug the key. Justify your answer in both the cases. ... PSU, JRF, IES, UPSC and many other competitive exams need to practice Electrical Engineering Quiz which are given topic wise in the following section of this post. Different wires drew different amount of current from the same cell. Answer. ₹ 145.00  ( 28% off ), Price on ObjectiveBooks.com Magnetism and Electromagnetism Take Test. Answer. Answer. (b) The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. 13.Two wires A and B are of equal length and have equal resistance. ₹ 12,999.00  ( 7% off ), Price on ObjectiveBooks.com In a conductor electrons are flowing from B to A. Note all the ammeter readings. Electrical Theory. Answer. C. reduces the magnetic field. A torch bulb is rated 2.5 V and 750 mA. (b) “Potential difference between points A and B in an electric field is 1 V”. (c) different wattage are connected in series. It has high resistivity and low melting point. Here we have covered Important Questions on Current Electricity for Class 12 Physics subject. Joule’s law of heating: It states that the amount of heat produced in a conductor is, 26.An electric bulb is rated at 60 W, 240 V. Calculate its resistance. The third reading for V = 3.0 volt and I — 0.6 A will be rejected as it has larger deviation from the rest of the readings. Calculate the number of electrons that flows through any section of the conductor in 1 second. State the change observed in the temperatures of the two wires. as rotor resistance is increased, Remains (a) lesser than that of A. Document Title. Heat produced in a conductor: Consider a wire AB having a resistance ‘R’ connected across the terminals of a cell. ₹ 13,490.00  ( 33% off ), Price on ObjectiveBooks.com The link to how to plot graph shows … Students can download these worksheets and practice them. Two devices of rating 44 W, 220 V and 11 W, 220 V are connected in series. Answer. 5. 21.When a high resistance voltmeter is connected directly across a resister its reading is 2 V. An electric cell is sending the current of 0.4 A, (measured by an ammeter) in the electric circuit in which a rheostat is also connected to vary the current. The combination is connected across a 440 V mains. Why AC systems are preferred over DC systems? Answer: Energy is defined as the capacity of a physical system to perform work. (iii)If all the conductors are of same thickness and of same material, which is the longest? Electrical Theory Practice Tests Consists of Practice Tests including Ohms Law, Resistors, Inductors, Capacitors, Series and Parallel Circuits, Transformers and Electrical Motors, Power Factor, Different Measuring Instruments, Units of Measurement, Circuit Breakers, Relays, Motor Control Centers and many more.. ... NEC Code Questions will be added in the … Basic Electrical interview Questions & Answers paper-1. Most people find the mathematics portion of the test to be the most difficult, especially due to the time limit and the restriction on the use of calculators. Two identical wires one of nichrome and other of copper are connected in series and a current (I) is passed through them. (c) Find the potential difference across the terminals of the battery. Answer: Option C unit of resistivity. List any three reasons. Class 10 Science Electricity Long Answer Type Questions [5 Marks] – Year 2012. Out of the two wires X and Y shown below, which one has greater resistance? GD Goenka Admission 2021 UPES Dehradun Application 2021 Consider … 36.The charge possessed by an electron is 1.6 X 10-19 coulombs. Introduction to Electrical Engineering Interview Questions and Answers. (ii) Total current drawn from the battery, and The wire used in the element of electric heater has a high resistivity and have a high melting point, i.e. Justify your answer. Calculate the resistance of the wire in the new Situation. 1. Resistance of. Indian Talent Olympiad - Apply Now!! (a) Difference between electric energy and electric power: ... Give a free Online RL Circuits … (b) For identical bulbs in parallel- same potential difference, different current. (v) Which one of the following relations is true for these conductors? Again replace the marked 2 wire with marked 3 wire which has the same length but is thicker than marked 1 and 2 nichrome wires. (a) Two resistors R1and R2 may form (i) a series combination or (ii) a parallel 5. B. helps conduct electricity. (b) different paths are available for the flow of current. ... For those looking for more practical learning, check out our review of the best Arduino starter kits for you to play around with. 56. 4. i.e. (i) the resultant resistance. Apparatus Required : A cell, an ammeter, nichrome wires of different length but same area of cross-section (thickness), nichrome wires of same length but different thickness, copper and iron wire of the same length and same thickness as that of any nichrome wire. Answer: Option A Wire ‘Y’ has greater resistance as it has more length than wire ‘X’. By what factor does the resistance of the wire change? Answer. 41.Series arrangements are not used for domestic circuits. Answer. (b) Find the reading of the ammeter. (b) State the relation between work, charge and potential difference for an electric circuit. Journeyman Electrician Practice Test 3; Journeyman Electrician Practice Test 4; Journeyman Electrician Practice Test 5; Journeyman Electrician Practice Test 6; Journeyman Electrician Practice Tests 7; Journeyman Electrican Practice Test 8; Journeyman Electrician Practice Test 9; Electrician Quiz Questions 10; Electrician Quiz Questions 11 Calculate the amount of charge flowing through the Justify your answer. unit. (c) What is the commercial unit of electric energy? (b) more than that of D. Practice Test: Question Set - 10 1. Electrical Engineering Objective Questions MCQ with Answer Free Pdf Download. (a)(i) Ammeter reading in the second case is half of the ammeter reading Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit Question No. (d) against the direction of the current. The electrical aptitude test requires considerable preparation. In this post provide you latest and updated 2018 Electrical MCQ Objective Questions with answer which are help for preparation all electrical engineering exams like GATE, IES, JTO, PSUs, RRB JE/AEN, RRB loco pilot and technicians, SSC JE, DMRC, LMRC, ISRO and other state level … 3. (d) For unidentical bulbs in parallel- different current, same potential difference.
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