This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What will create static electricity? A) Rubbing a plastic comb on a piece of wool. B) Flipping on a light switch in the classroom. C) Allowing like forces to attract (negative attracts a negative). D) Wrapping a wire around an iron and sending a charge through a wire. Show Answer Correct Answer: A) Rubbing a plastic comb on a piece of wool. 2. A bulb of 20 W is connected to 220 V battery. What is the resistance of the bulb? A) 11 ohm. B) 2420 ohm. C) 484 ohm. D) 220 ohm. Show Answer Correct Answer: B) 2420 ohm. 3. Movement of charge in static electricity A) Fuse. B) Resistor. C) Current. D) Discharge. Show Answer Correct Answer: D) Discharge. 4. What type of device can increase and decrease voltage? A) Generators. B) Transformers. C) Galvanometers. D) Electric motors. Show Answer Correct Answer: B) Transformers. 5. An image is formed upside down in front of mirror and seems bigger by 2 times from the actual size. What might be the type of mirror uses? A) Concave mirror. B) Convex mirror. C) Plane mirror. D) Concave lens. Show Answer Correct Answer: A) Concave mirror. 6. How much voltage is needed to create a current of 12 A in a circuit with a resistance of 5 ohms? A) 2.5 V. B) 60 V. C) 120 A. D) 60 ohms. Show Answer Correct Answer: B) 60 V. 7. What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added? A) Increases. B) Decreases. C) Remains the same. D) Cannot be predicted. Show Answer Correct Answer: B) Decreases. 8. An electric circuit with only one path for current is called a ..... A) Parallel circuit. B) Insulator. C) Series circuit. D) Resistor. Show Answer Correct Answer: C) Series circuit. 9. The focal length is equal to the: A) Radius of curvature. B) Diameter of curvature. C) Half radius of curvature. D) Half diameter of curvature. Show Answer Correct Answer: C) Half radius of curvature. 10. What will be the new resistivity of a metallic wire if it's length becomes double A) Increases two times. B) Becomes half. C) Increases four times. D) Remains same. Show Answer Correct Answer: D) Remains same. 11. An electric circuit with two or more paths for current is called ..... A) A parallel circuit. B) A series circuit. C) A short circuit. D) An open circuit. Show Answer Correct Answer: A) A parallel circuit. 12. A cpacitor is attached with cell of emf E and internal resistance r, the potential difference across capacitor A) Equal to E. B) Less than E. C) Greater than E. D) Less than and equal to E. Show Answer Correct Answer: A) Equal to E. 13. If cross-sectional area of pipe decreases, the speed of fluid must increase according to: A) Continuity equation. B) Bernoulli's equation. C) Torricelli's theorem. D) Venture relation. Show Answer Correct Answer: A) Continuity equation. 14. The Superposition principle is obeyed by ..... A) Trilateral networks. B) Linear networks. C) Non-linear networks. D) Lateral networks. Show Answer Correct Answer: B) Linear networks. 15. A current of 10 A is passing through a lamp. What charge will pass through it in 20 seconds? A) 50 C. B) 5 C. C) 200 C. D) 20 C. Show Answer Correct Answer: C) 200 C. 16. A 12 volt battery supplies voltage to two bulbs. How much voltage would each bulb get? A) 6 volts. B) 12 volts. C) All the above. D) None of the above. Show Answer Correct Answer: A) 6 volts. 17. What kind of energy is the electricity transferred into in a toaster? A) Sound. B) Light. C) Heat. D) Light and heat. Show Answer Correct Answer: D) Light and heat. 18. Select the correct statement regarding current A) Its dimension is [M$^{0}$ L$^{0}$ T$^{0}$ A]. B) It is a scalar quantity. C) It's SI unit is ampere. D) All of these. Show Answer Correct Answer: D) All of these. 19. Which of the following is NOT a good conductor? A) Aluminum. B) Mica. C) Silver. D) Copper. Show Answer Correct Answer: B) Mica. 20. If you cut a magnet in half, what happens to the poles? A) One half gets the North Pole, the other half gets the South Pole. B) Both halves get only a North Pole. C) Both halves get only a South Pole. D) Both halves get a North pole and a South Pole. Show Answer Correct Answer: D) Both halves get a North pole and a South Pole. 21. A contaminant to the environment, especially human-made waste. A) REDUCE. B) POLLUTION. C) RECYCLE. D) CONSUMER. Show Answer Correct Answer: B) POLLUTION. 22. In a series circuit, if one light bulb is removed, the rest of the light bulbs would ..... A) Stay lit. B) Not work. C) Short circuit. D) Burn out. Show Answer Correct Answer: B) Not work. 23. The value of equivalent resistance in series connection will be ..... than each individual resistance. A) Lesser. B) Greater. C) Zero. D) Equal. Show Answer Correct Answer: B) Greater. 24. The order of thermal speed of free electrons in the conductor, at room temperature is A) 10$^{-5}$ m/s. B) 10$^{5}$ m/s. C) 10$^{-3}$ m/s. D) 10$^{3}$ m/s. Show Answer Correct Answer: B) 10$^{5}$ m/s. 25. The amount of electricity produced by a generator can be increased by A) Adding more loops of wire. B) Increasing current. C) Putting an iron core inside the coil. D) All of the above. Show Answer Correct Answer: A) Adding more loops of wire. ← 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