This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... magnets have a North pole and a South pole. A) No. B) Some. C) All. D) Broken. Show Answer Correct Answer: C) All. 2. How much energy is dissipated by a resistor with a potential difference of 9.0V, current of 0.23A, and time of 331 seconds? A) 20.7 J. B) 45.9 J. C) 93.2 J. D) 68.7 J. Show Answer Correct Answer: B) 45.9 J. 3. Which material is a conductor? A) Metal. B) Plastic. C) Rubber. D) None of the above. Show Answer Correct Answer: A) Metal. 4. In the potentiometer the balanced point obtained when A) Emf of battery cell becomes equal to experimental cell(primary cell). B) Potential difference between the +ve end of the battery to jockey becomes equal to experimental cell(primary cell). C) Potential difference of the wire between the +ve end of the cell to jockey becomes equal to emf of the battery. D) The potential difference across the potentiometer wire becomes equal to emf of the battery. Show Answer Correct Answer: B) Potential difference between the +ve end of the battery to jockey becomes equal to experimental cell(primary cell). 5. The path from the battery through the wire and light bulb and back to the battery is an INCOMPLETE or OPEN circuit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. Charges flow through a circuit due to differences in ..... A) Resistance. B) Conductivity. C) Potential energy. D) Insulation. Show Answer Correct Answer: C) Potential energy. 7. As the number of resistors increase in a series circuit, the total resistance ..... and the total current ..... A) Increase, decrease. B) Decrease, increase. C) Increase, increase. D) Decrease, decrease. Show Answer Correct Answer: A) Increase, decrease. 8. In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW are connected . The voltage of electric mains is 220 V. The minimum capacity of the main fuse of the building will be A) 14 A. B) 8A. C) 10A. D) 12A. Show Answer Correct Answer: D) 12A. 9. Two resistors 6 ohm and 9 ohm are connected in series to a 120 volt source. The power consumed by 6 ohm resistor is A) 384 W. B) 616 W. C) 1500 W. D) 1800 W. Show Answer Correct Answer: A) 384 W. 10. The plastic around the wire is A) Conductor. B) Insulator. C) Decoration. D) None of the above. Show Answer Correct Answer: B) Insulator. 11. What is the source of A.C.? A) Mains. B) Simple voltaic cell. C) Dry Cell. D) Li Fe Cell. Show Answer Correct Answer: A) Mains. 12. Why are parallel circuits more useful in more applications than series circuits? (3b; A) Parallel circuits are cheaper to build. B) Parallel circuits take up less room. C) Series circuits produce short circuits, but parallel circuits don't. D) They allow many appliances to be used at one time. Show Answer Correct Answer: D) They allow many appliances to be used at one time. 13. This is related to the force that causes electric charges to flow A) Voltage. B) Current. C) Resistance. D) Circuit. Show Answer Correct Answer: A) Voltage. 14. What is an example of an electric receiver? A) Wires. B) D cell. C) Switch. D) Motor. Show Answer Correct Answer: D) Motor. 15. The movement of electrically charged particles. A) Voltage. B) Current. C) Resistance. D) None of the above. Show Answer Correct Answer: B) Current. 16. Current flowing through a wire is surrounded by a/an A) Force field. B) Magnetic force. C) Nothing. D) None of the above. Show Answer Correct Answer: B) Magnetic force. 17. An object becomes negatively charged by A) Losing protons. B) Gaining electrons. C) Losing electrons. D) Gaining protons. Show Answer Correct Answer: B) Gaining electrons. 18. What is the flow of charge known as? A) Power. B) Resistance. C) Current. D) Voltage. Show Answer Correct Answer: C) Current. 19. How should an ammeter be connected in a circuit? A) In parallel. B) In series. C) It does not matter. D) Directly to the power source. Show Answer Correct Answer: B) In series. 20. In a series circuit, if one light goes out, what happens? A) All lights will go out. B) The other lights will stay on. C) All the above. D) None of the above. Show Answer Correct Answer: A) All lights will go out. 21. State Kirchhoff's First Law and provide an example. A) Kirchhoff's First Law states that the total current entering a junction equals the total current leaving it. B) The total resistance at a junction is equal to the sum of individual resistances. C) The total current in a circuit is always zero regardless of junctions. D) The total voltage entering a junction equals the total voltage leaving it. Show Answer Correct Answer: A) Kirchhoff's First Law states that the total current entering a junction equals the total current leaving it. 22. If a wire is stretched to four times its length, then the specific resistance of the wire will be A) Becomes four times. B) Become 1/4 times. C) Become 16 times. D) Remain the same. Show Answer Correct Answer: D) Remain the same. 23. An electron has a change of A) 1.6 x 10 19 C. B) 1.6 x 10-19 C. C) 1.6 x 10-19 A. D) 1.6 x 10 19 A. Show Answer Correct Answer: B) 1.6 x 10-19 C. 24. The inverse of the effective resistance is equal to the sum of the inverses of individual resistances. A) Series. B) Parallel. C) All the above. D) None of the above. Show Answer Correct Answer: B) Parallel. 25. In a typical battery ..... A) The electrical potential energy does not affect the flow of current. B) The negative end has the same amount of electrical potential energy as the positive end. C) The positive end has more electrical potential energy than the negative end. D) Voltage determines which end of the battery has more electrical potential energy. Show Answer Correct Answer: C) The positive end has more electrical potential energy than the negative end. ← 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