This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A group of lights are connected in a parallel circuit. One of the lights is removed. The rest of the lights will A) Get brighter. B) Get dimmer. C) Go out. D) Not change. Show Answer Correct Answer: D) Not change. 2. House hold circuits are connected in A) Parallel. B) Series. C) Both series and parallel. D) None of these. Show Answer Correct Answer: A) Parallel. 3. A wire of uniform cross-section, A length L and resistance R is cut into two equal parts. The resistivity of each part will be A) Doubled. B) Halved. C) Remains the same. D) One fourth. Show Answer Correct Answer: C) Remains the same. 4. Which of follwing charactristics of electrons determines the current in the conductor A) Thermal velocity of electrons alone. B) Drift velocity of electrons alone. C) Tboth drift velocity and thermal velocity of electrons alone. D) Niether drift velocity and thermal velocity. Show Answer Correct Answer: B) Drift velocity of electrons alone. 5. Kirchoff's first law is a consequence of conservation of A) Current. B) Charges. C) Energy. D) Power. Show Answer Correct Answer: B) Charges. 6. Like poles on a permanent magnet will A) Attract each other. B) Repel each other. C) Always interact. D) Point in the same direction. Show Answer Correct Answer: B) Repel each other. 7. What is immaterial for an electric fuse? A) Its length. B) Its radius. C) Its specific resistance. D) Current flowing through it. Show Answer Correct Answer: A) Its length. 8. What happens when you pull a bulb out of a series circuit A) Electricity will find a different path rest of bulbs light. B) The electricity will flow around and the other bulbs light up. C) It will create a gap or open circuit-no bulbs light up. D) The bulb will still light either way. Show Answer Correct Answer: C) It will create a gap or open circuit-no bulbs light up. 9. Two conductors are made of the same material and have the same length. Conductor A is asolid wire of diameter 1 m. Conductor B is a hollow tube of inside diameter 1 m and outsidediameter 2 m. The ratio of their resistance, , is:$R_A$ $R_B$ A) 1. B) $\sqrt{2}$. C) 3. D) 2. Show Answer Correct Answer: C) 3. 10. True or False:A battery is used to power a flashlight circuit. When the battery no longer works, it is because it has run out of charge. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. True or False:Charge is consumed as it moves through the energy-transforming devices of the external circuit. For instance, the amount of charge entering a light bulb in a second is less than that which exits the light bulb in a second. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. SI Unit of Electric current A) Ampaire. B) Ampare. C) Ampere. D) Ampara. Show Answer Correct Answer: C) Ampere. 13. What is the direction of conventional current? A) Positive terminal to negative terminal. B) Negative terminal to positive terminal. C) Depends on the condition. D) None. Show Answer Correct Answer: A) Positive terminal to negative terminal. 14. A battery with an emf of 24 V is connected to a 6-$\Omega$ resistor. As a result, current of 3 A exists in the resistor. The terminal potential difference of the battery is: A) 0. B) 6V. C) 12V. D) 18V. Show Answer Correct Answer: D) 18V. 15. When a 4 ohm resistor is connected across the terminals of a 2 V battery, the number of coulombs passing through the resistor per second is ..... A) 0.5. B) 1. C) 2. D) 4. Show Answer Correct Answer: A) 0.5. 16. Drift velocity of electrons in a conductor occurs when A) External electric field is applied. B) No electric field is required. C) It is thermal velocity of electrons. D) None of the above. Show Answer Correct Answer: A) External electric field is applied. 17. Voltage is measured in what? A) Ohms. B) Amperes. C) Volts. D) Watts. Show Answer Correct Answer: C) Volts. 18. What is the difference between a conductor and an insulator? A) An insulator allows electricity to flow through it easily and a conductor does not. B) A conductor allows electricity to flow through it easily and an insulator does not. C) An insulator is magnetic and a conductor is not. D) A conductor is magnetic and an insulator is not. Show Answer Correct Answer: B) A conductor allows electricity to flow through it easily and an insulator does not. 19. The resistance of a nichrome wire at 0$^{0}$ C is 10 ohm. If its temperature co efficient of resistance is 0.004/$^{0}$C, what is the resistance at boiling point of water? A) 1.4 ohm. B) 10 ohm. C) 15 ohm. D) 14 ohm. Show Answer Correct Answer: D) 14 ohm. 20. What happens when two unlike charges are placed near each other? A) They form electromagnetic waves. B) They will pull away from each other. C) They attract. D) Nothing happens. Show Answer Correct Answer: C) They attract. 21. What is the abbreviation for the ampere unit? A) A. B) V. C) C. D) W. Show Answer Correct Answer: A) A. 22. The SI Unit of electric potential is the ampere A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. A battery can be used to produce an electric current. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. As the magnet moves back and forth, the light bulb indicates which of the following? A) Conductivity. B) Current. C) Magnetism. D) Temperature. Show Answer Correct Answer: B) Current. 25. Clara added another light to an electrical circuit and all the lights became dimmer. What is the most likely cause of the dimmer lights? A) The batteries are weak. B) The light bulbs are hot. C) The circuit is a parallel circuit. D) The circuit is a series circuit. Show Answer Correct Answer: D) The circuit is a series circuit. ← 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