This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the purpose of a switch in an electric circuit? A) To allow the circuit to be opened or closed. B) To change the direction of the current. C) To provide a push for the current. D) To increase the electric power to the load. Show Answer Correct Answer: A) To allow the circuit to be opened or closed. 2. An electric current is made up of ..... charged electrons. A) Positively. B) Neutrally. C) Negatively. D) None of the above. Show Answer Correct Answer: C) Negatively. 3. The area around a charge in which the electric force is experienced by other charged particles is the ..... A) Electric charge. B) Electric force. C) Electric field. D) Electric current. Show Answer Correct Answer: C) Electric field. 4. Matter through which electrons do NOT flow easily A) Battery. B) Conductor. C) Insulator. D) Protons. Show Answer Correct Answer: C) Insulator. 5. Grounds, fuses and circuit breakers are designed to A) Protect from electric shock. B) Prevent damage to electronics. C) Prevent fires. D) All of the above. Show Answer Correct Answer: D) All of the above. 6. What is the resistance of a 120 volt, 3 amp device? A) 360 ohms. B) 40 ohms. C) 4 ohms. D) 0.025 ohms. Show Answer Correct Answer: B) 40 ohms. 7. Is a measure of how difficult it is for an electric current to flow in a material. A) Electric current. B) Electric circuit. C) Electric resistance. D) None of the above. Show Answer Correct Answer: C) Electric resistance. 8. Which of the following is NOT a source of Direct Current (DC)? A) Solar cells. B) Fuel cells. C) Alternators. D) None of the above. Show Answer Correct Answer: C) Alternators. 9. The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter, the change in the resistance of the wire will be: A) 200%. B) 100%. C) 50%. D) 300%. Show Answer Correct Answer: D) 300%. 10. Volt is equivalent to ..... A) J /sec. B) Ampere / coulomb. C) J / coulomb. D) Ampere / ohm. Show Answer Correct Answer: C) J / coulomb. 11. Each time a lightbulb is added to a series circuit, the other bulbs in the circuit A) Get brighter. B) Get dimmer. C) Stay the same brightness. D) Release more heat. Show Answer Correct Answer: B) Get dimmer. 12. SI unit of resistivity (specific resistance) is ..... A) Ohm. B) Ohm meter. C) Volt. D) Ampere. Show Answer Correct Answer: B) Ohm meter. 13. True or False:Charge is supplied with energy in the internal circuit and the energy is transformed into other forms in the external circuit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. Which of the following cannot have an electrical current? A) Pillow Cases. B) Lightning Bold. C) Washing Machine. D) Video Games. Show Answer Correct Answer: A) Pillow Cases. 15. Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails? A) Iron nail. B) Water. C) Wooden stake. D) Plastic spoon. Show Answer Correct Answer: A) Iron nail. 16. Measured in volts. A) Voltage. B) Current. C) Resistance. D) None of the above. Show Answer Correct Answer: A) Voltage. 17. Which of the following statements about conventional current is correct? A) The electrons do not move. B) The electrons flow in all directions. C) Electrons flow from negative to positive. D) Electrons flow from positive to negative. Show Answer Correct Answer: C) Electrons flow from negative to positive. 18. Two wires of resistance 3 ohms each are connected in series. What is the effective resistance of the combination? A) 1 ohm. B) 2 ohm. C) 6 ohm. D) 9 ohm. Show Answer Correct Answer: D) 9 ohm. 19. In a complete circuit, the work done by an electrical energy source in moving an electric charge of 5.0 C from terminal X to terminal Y is 3.5 J.Determine the e.m.f. of the electrical energy source. A) 0.70 V. B) 1.43 V. C) 17.5 V. D) None of the above. Show Answer Correct Answer: A) 0.70 V. 20. The magnetic field lines around a bar magnet A) Are perfectly straight. B) Are only perpendicular to the magnet. C) Spread out from one pole and curve around to the other. D) Cross back and forth over one another. Show Answer Correct Answer: C) Spread out from one pole and curve around to the other. 21. An electric circuit contains an operating heating element and a lit lamp. Which statement best explains why the lamp remains lit when the heating element is removed from the circuit? A) The lamp has less resistance than the heating element. B) The lamp has more resistance than the heating element. C) The lamp and heating element were connected in parallel. D) The lamp and heating element were connected in series. Show Answer Correct Answer: C) The lamp and heating element were connected in parallel. 22. An certain resistor dissipates 0.5 W when connected to a 3 V potential difference. When connected to a 1 V potential difference, this resistor will dissipate: A) 0.056 W. B) 1.5 W. C) 0.167 W. D) 0.5 W. Show Answer Correct Answer: A) 0.056 W. 23. If direction of current is from positive to negative, then it is called A) Electronic current. B) Conventional current only. C) Positronic current. D) Protonic current. Show Answer Correct Answer: B) Conventional current only. 24. What is the flow of electric charges called? A) Voltage. B) Resistance. C) Electric Current. D) Power. Show Answer Correct Answer: C) Electric Current. 25. How do you measure voltage, current, and resistance in a physical circuit? A) Multimeter. B) Voltmeter. C) Ohmeter. D) Odometer. Show Answer Correct Answer: A) Multimeter. ← 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