This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 36 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What direction does a compass point? A) North. B) South. C) East. D) West. Show Answer Correct Answer: A) North. 2. Which of the following items would be needed to generate electricity? A) A magnet and metal bar. B) Metal bar and wire. C) A magnet and wire. D) A battery, a magnet, and a wire. Show Answer Correct Answer: C) A magnet and wire. 3. In a potentiometer experiment, the balancing length with a cell is 240 cm. On shunting the cell with a resistance of 2 ohm, the balancing length becomes 120 cm. The internal resistance of the cell is ..... ohm. A) 2. B) 4. C) 0.5. D) 1. Show Answer Correct Answer: A) 2. 4. What is the purpose of transmission wires? A) Move electricity from place to place. B) Increase or decrease the voltage of the electricity. C) Change mechanical energy into electrical energy. D) None of the above. Show Answer Correct Answer: A) Move electricity from place to place. 5. The movement of electrons is called electric ..... A) Transport. B) Current. C) Voltage. D) Resistance. Show Answer Correct Answer: B) Current. 6. 3 resistors are connected to a 9 V battery n a series circuit, the first resistor uses 6 V, the second uses 2 V. How much voltage does the third resistor use? A) 1 V. B) 2 V. C) 3 V. D) 9 V. Show Answer Correct Answer: A) 1 V. 7. A carbon resistance has colour bands in order yellow, brown, red. Its resistance is A) 41 $\Omega$. B) 41 x 10 $^{2}$ $\Omega$. C) 4 x 10 $^{3}$ $\Omega$. D) 4.2 $\Omega$. Show Answer Correct Answer: B) 41 x 10 $^{2}$ $\Omega$. 8. Which of the following best describes a lightning strike? A) A form of current electricity. B) A form of static electricity. C) A form of thermal energy. D) A form of mechanical energy. Show Answer Correct Answer: B) A form of static electricity. 9. The mechanical equivalent of heat is 1 cal = 4.18 J. A heating coil, connected to a 120-V source, provides 60, 000 calories in 10 minutes. The current in the coil is: A) 0.83 A. B) 2 A. C) 3.5 A. D) 20 A. Show Answer Correct Answer: C) 3.5 A. 10. Batteries convert what type of energy into electricity? A) Chemical energy. B) Mechanical energy. C) Both. D) Kinetic energy. Show Answer Correct Answer: A) Chemical energy. 11. Measurement of how much current is flowing in a circuit A) Amperes. B) Voltage. C) Charge. D) Terminal. Show Answer Correct Answer: A) Amperes. 12. Jacob tested a material in the science lab. He put it between a wire and a battery in a closed circuit. What evidence might have led him to decide the material is an insulator? A) The battery did not die. B) She did not create a short circuit. C) The wire got hot. D) The light bulb was off. Show Answer Correct Answer: D) The light bulb was off. 13. The internal resistance of a cell of emf 4 V is 0.1 ohm. It is connected to a resistance of 3.9 ohm. The terminal voltage across the cell will be ..... A) 0.1 V. B) 2.8 V. C) 3.9 V. D) 2 V. Show Answer Correct Answer: C) 3.9 V. 14. Across metallic conductor of non-uniform cross-section, a constant potential difference is applied. The quantity which remain(s) constant along the conductor is A) Current density. B) Current. C) Drift velocity. D) Electric field. Show Answer Correct Answer: B) Current. 15. What is the formula for total resistance in a parallel circuit? A) R total = R1 + R2 + R3 + + Rn. B) R total = R1 * R2 * R3 * * Rn. C) 1/R total = 1/R1 + 1/R2 + 1/R3 + + 1/Rn. D) 1/R total = R1 + R2 + R3 + + Rn. Show Answer Correct Answer: C) 1/R total = 1/R1 + 1/R2 + 1/R3 + + 1/Rn. 16. A parallel plate capacitor stores a charge Q at a voltage V. suppose the area of the parallel plate capacitor and the distance between the plates are each doubled then which is the quantity that will change? A) Capacitance. B) Energy density. C) Charge. D) None of the above. Show Answer Correct Answer: B) Energy density. 17. Appliances at home usually run on what voltage? A) 120 or 240. B) 250 or 500. C) 175 or 250. D) 120 or 175. Show Answer Correct Answer: A) 120 or 240. 18. Arrangement is used to increase the current in a circuit. A) Resistors connected in parallel. B) Resistors connected in series. C) Resistors connected in alternate. D) Resistors connected in combination. Show Answer Correct Answer: A) Resistors connected in parallel. 19. Turbulent flow is A) Unsteady and regular. B) Steady and regular. C) Unsteady and irregular. D) Steady and regular. Show Answer Correct Answer: C) Unsteady and irregular. 20. In a car battery, a current is produced by the flow of both negatively and positively charged particles A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. If 100 W bulb and 60 W bulb is connected in parallel ..... bulb/ bulbs glows brighter. A) 60 W. B) 100 W. C) Both 100 W and 60 W. D) Neither 100 W or 60 W. Show Answer Correct Answer: B) 100 W. 22. Which material is an insulator? A) Plastic. B) Metal. C) A spoon. D) None of the above. Show Answer Correct Answer: A) Plastic. 23. When a potential difference is applied across, the current passing through A) An insulator at 0 K is zero. B) A semiconductor at 0 K is zero. C) A p-n diode at 300 K is finite if it s reverse biased. D) All the options are correct. Show Answer Correct Answer: D) All the options are correct. 24. In parallel circuit, there are ..... pathways for charge to flow. A) One. B) Two or more. C) None. D) Zero. Show Answer Correct Answer: B) Two or more. 25. The storage battery of a car has an emf of 8 V, if the internal resistance of battery 0.8 ohm, what is the maximum current that can be drawn from the battery A) 10A. B) 20A. C) 30A. D) 40A. Show Answer Correct Answer: A) 10A. ← PreviousNext →Related QuizzesClass 12 Physics (Part I) Chapter 3 Current Electricity Quiz 1Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 2Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 3Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 4Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 5Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 6Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 7Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 8Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 9Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books