This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the switch is ..... , the lights are off. A) Open. B) Closed. C) All the above. D) None of the above. Show Answer Correct Answer: A) Open. 2. What are filaments? A) Resistor's in the toaster's circuit. B) Wires that heat up when they conduct electricity. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 3. What is the purpose of increasing the voltage in a transformer at the power plant? A) To reduce energy loss over long distances. B) To increase energy consumption. C) To make electricity safer for home use. D) None of the above. Show Answer Correct Answer: A) To reduce energy loss over long distances. 4. Which change would result in a stronger electromagnet? A) Reducing the number of batteries. B) Increasing the voltage of the battery. C) Substituting another metal for the iron core. D) Decreasing the number of coils around the iron core. Show Answer Correct Answer: B) Increasing the voltage of the battery. 5. If two identical cells, when connected in series or in parallel, supply same amount of current through an external resistance of 2 ohm .the internal resistance of each cell is A) 2 ohm. B) 4 ohm. C) 6 ohm. D) 1 ohm. Show Answer Correct Answer: A) 2 ohm. 6. Current is a Vector Quantity A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 7. True or False:The path of charge flow from the + to the-terminal of the circuit can consist of nonconductive material. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. In a series circuit, which of the following is the same throughout the circuit? A) Resistance. B) Voltage. C) Current. D) Power. Show Answer Correct Answer: C) Current. 9. An ampere is measured in ..... A) Seconds. B) Minutes. C) Hours. D) None of the above. Show Answer Correct Answer: A) Seconds. 10. What is the potential difference between points A and B if a charge of 5C does 100 joules of work? A) 20V. B) 500V. C) 0.05V. D) None of the above. Show Answer Correct Answer: A) 20V. 11. Which of these causes static electricity? A) Electrical circuits. B) Electrical outlets. C) Electrons floating in the air. D) Electrons moving from one object to another. Show Answer Correct Answer: D) Electrons moving from one object to another. 12. Which of the following quantities will be same for all the parts in series circuit? A) Voltage. B) Power. C) Resistance. D) Current. Show Answer Correct Answer: D) Current. 13. A parallel circuit has A) Only one path for the electric charges to follow. B) Multiple paths for the electric charges to follow. C) All the above. D) None of the above. Show Answer Correct Answer: B) Multiple paths for the electric charges to follow. 14. The function of the circuit breaker is A) To safeguard the circuit. B) On and off the circuit. C) To save human life. D) None of these. Show Answer Correct Answer: A) To safeguard the circuit. 15. When a wire is stretched and its radius becomes r/2. then its resistance will be A) 16 R. B) 4R. C) 2R. D) 0. Show Answer Correct Answer: A) 16 R. 16. What 'flows' in a wire? A) Protons. B) Neutrons. C) Atoms. D) Electrons. Show Answer Correct Answer: D) Electrons. 17. An electric field is ..... A) Where a resister is placed in a circuit. B) A parallel circuit. C) The area around electric charges, where electric forces can act. D) A series circuit. Show Answer Correct Answer: C) The area around electric charges, where electric forces can act. 18. ..... is a sudden discharge of electricity. A) Thunder. B) Lightning. C) None of the above. D) None of the above. Show Answer Correct Answer: B) Lightning. 19. What is the equivalent resistance of two 6$\Omega$ resistors in parallel? A) 2$\Omega$. B) 12$\Omega$. C) 3$\Omega$. D) 4$\Omega$. Show Answer Correct Answer: C) 3$\Omega$. 20. Name the positive terminal of the dry cell A) Divisor. B) Manganese dioxide. C) Zinc cover. D) Graphite rod. Show Answer Correct Answer: D) Graphite rod. 21. Current that reverses direction in a regular pattern is called ..... A) Direct current. B) Circuit current. C) Magnetic current. D) Alternating current. Show Answer Correct Answer: D) Alternating current. 22. What is the cause of resistance in a conductor? A) The flow of electrons. B) The potential difference. C) The positive ions. D) The collisions between electrons and positive ions. Show Answer Correct Answer: D) The collisions between electrons and positive ions. 23. When two objects are rubbed together, some negatively charged particles from one object can be transferred to another object. What will happen if the objects have the same charge? A) They will create a spark. B) They will not act differently. C) They will attract each other. D) They will repel each other. Show Answer Correct Answer: D) They will repel each other. 24. What type of electricity do we use everyday? A) Static electricity. B) Electric current. C) All the above. D) None of the above. Show Answer Correct Answer: B) Electric current. 25. State the SI unit of resistance. A) Ohm ($\Omega$). B) Ampere (A). C) Volt (V). D) Watt (W). Show Answer Correct Answer: A) Ohm ($\Omega$). ← 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