This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a good choice during a thunder storm. A) Stand under a tall tree so the lightning strikes the tree instead of you. B) Use an umbrella to stay dry since water conducts electricity. C) Lay in a low ditch so that you are not tall. D) Use your landline phone instead of your cellphone if you need to make a phone call. Show Answer Correct Answer: C) Lay in a low ditch so that you are not tall. 2. When a glass rod is rubbed on a silk cloth, the glass rod acqires ..... charge A) Negative. B) Positive. C) Nutral. D) Electron. Show Answer Correct Answer: B) Positive. 3. Expression for lost volts is ..... A) V = I R. B) V = I r. C) V = R r. D) None of the above. Show Answer Correct Answer: B) V = I r. 4. As the resistance of a circuit increases, the current will ..... A) Increase. B) Decrease. C) Stay the same. D) Magnify. Show Answer Correct Answer: B) Decrease. 5. What happens to voltage in a circuit if the current remains the same and the resistance is decreased? A) Voltage will increase. B) Voltage will decrease. C) Voltage will remain unchanged. D) None of the above. Show Answer Correct Answer: A) Voltage will increase. 6. What does power mean? A) Joules transferred per second. B) Electron flow per second. C) Speed of electrons. D) Electron energy. Show Answer Correct Answer: A) Joules transferred per second. 7. Thermocouple is an arrangement of two different metals a A) To convert heat energy in to electrical energy. B) To produce more heat. C) To convert heat energy into chemical energy. D) To convert electric energy in to heat energy. Show Answer Correct Answer: A) To convert heat energy in to electrical energy. 8. A current of 0.3 A is passed through a lamp for 2 minutes using a 6-V power supply. The energydissipated by this lamp during the 2 minutes is A) 1.8 J. B) 216 J. C) 20 J. D) 12 J. Show Answer Correct Answer: B) 216 J. 9. Electrical devices have ..... electric resistance, while good conductors have ..... electric resistance. A) High, low. B) Low, high. C) All the above. D) None of the above. Show Answer Correct Answer: A) High, low. 10. A flow of electrons through a conductor is called: A) A river. B) A spark. C) An electron flow. D) A current. Show Answer Correct Answer: D) A current. 11. Which of the following have the highest conductivity? A) Aluminium. B) Copper. C) Nichrome. D) Silver. Show Answer Correct Answer: D) Silver. 12. Wooden golf tee A) Conductor. B) Insulator. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insulator. 13. ..... electricity is the buildup of charged particles in a material. A) Current. B) Charge. C) Static. D) Circuit. Show Answer Correct Answer: C) Static. 14. A kettle requires a current of 2.1 A and takes 3 minutes to boil a litre of water. Calculate the charge through the wire in this time? A) 6.3 C. B) 378 C. C) 0.7 C. D) 6.3 Q. Show Answer Correct Answer: B) 378 C. 15. What measures current? A) Electroscope. B) Meter. C) Ammeter. D) All of the above. Show Answer Correct Answer: C) Ammeter. 16. What is electromotive force? A) The work done in driving a unit charge around a complete circuit. B) The work done in driving a unit charge through the component. C) All the above. D) None of the above. Show Answer Correct Answer: A) The work done in driving a unit charge around a complete circuit. 17. When electrons all spin in the same direction, they create an invisible force known as A) Electricity. B) Magnetism. C) Motor. D) Electrons. Show Answer Correct Answer: B) Magnetism. 18. What is a permanent magnet? A) Has magnetic properties for a long time. B) Is magnetized by an electric current. C) Is not magnetized. D) Does not have a north or south pole. Show Answer Correct Answer: A) Has magnetic properties for a long time. 19. Name the factors decide internal resistance of a cell A) 1. temperature. B) 2. nature of the electrolyte. C) 3. nature of the electrodes. D) 4.distance between the electrodes. E) 1, 2, 3 & 4. Show Answer Correct Answer: E) 1, 2, 3 & 4. 20. Which of the following materials is commonly used as a core in electromagnets? A) Copper. B) Aluminum. C) Iron. D) Plastic. Show Answer Correct Answer: C) Iron. 21. An incomplete or broken circuit. A) Closed Circuit. B) Open Circuit. C) Cracked bulb Circuit. D) None of the above. Show Answer Correct Answer: B) Open Circuit. 22. In a series circuit, if one component fails, what happens to the rest of the circuit? A) The entire circuit stops working. B) The rest of the circuit continues to work. C) The voltage increases. D) The current increases. Show Answer Correct Answer: A) The entire circuit stops working. 23. In a simple circuit, what is the role of a resistor? A) To increase the current flow. B) To decrease the voltage. C) To limit the current flow. D) To store electrical energy. Show Answer Correct Answer: C) To limit the current flow. 24. To have a complete circuit, the path must be ..... A) Open. B) Closed. C) All the above. D) None of the above. Show Answer Correct Answer: B) Closed. 25. How is a voltmeter connected in the circuit to measure the potential difference between two points? A) Series. B) Parallel. C) According to the situation either series or parallel. D) None. Show Answer Correct Answer: B) Parallel. ← 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