This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 29 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which circuit is pictured below? A) Series circuit. B) Open circuit. C) Parallel circuit. D) Solar circuit. Show Answer Correct Answer: C) Parallel circuit. 2. When unequal resistors are connected in parallel in a circuit, A) The same current always runs through each resistor. B) The potential drop is always the same across each resistor. C) The largest resistance has the largest current through it. D) The power generated in each resistor is the same. Show Answer Correct Answer: B) The potential drop is always the same across each resistor. 3. How does a switch control the flow of electricity? A) A switch can open or close a circuit. B) A switch can convert electricity into heat. C) A switch can make electrons positively charged. D) A switch can make electrons neutral. Show Answer Correct Answer: A) A switch can open or close a circuit. 4. A resistance of wire at 20$^{0}$C is 20 ohm and at 500$^{0}$ C is 60 ohm. At what temperature its resistance will be 25 ohm? A) 50$^{0 }$C. B) 60$^{0}$ C. C) 70$^{0}$ C. D) 80$^{0}$ C. Show Answer Correct Answer: D) 80$^{0}$ C. 5. As per Ohm's law, V = ..... X ..... A) I, R. B) Q, R. C) Q, I. D) V, I. Show Answer Correct Answer: A) I, R. 6. Describe the factors that affect the resistivity of a material. A) Magnetic field strength. B) Temperature, material composition, impurities, and structural properties. C) Voltage and current levels. D) Surface area and color. Show Answer Correct Answer: B) Temperature, material composition, impurities, and structural properties. 7. Which quantity describes the measure of the rate of delivery of electrical energy, or the rate of work done by an electrical component? A) Voltage. B) Electric Current. C) Electric Resistance. D) Electrical Power. Show Answer Correct Answer: D) Electrical Power. 8. What particles of an atom are attracted to each other? A) Protons and Electrons. B) Electrons and Electrons. C) Protons and Protons. D) Electrons and Neutrons. Show Answer Correct Answer: A) Protons and Electrons. 9. This unit tells you how much electricity is passing a point per second. A) Joules (J). B) Volts (V). C) Amperes (A). D) Ohms ($\Omega$). Show Answer Correct Answer: C) Amperes (A). 10. A potentiometer wire is 100 cm long a constant potential difference is maintained across it. At first, two cells are connected in series to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of emfs is ..... A) 5:1. B) 5:4. C) 3:4. D) 3:2. Show Answer Correct Answer: D) 3:2. 11. The SI unit of electric charge is the ..... A) Volt. B) Ampere. C) Coulomb. D) Meter. Show Answer Correct Answer: C) Coulomb. 12. Effective capacitance of two capacitors having equal capacitance when connected in series is 12 pF. Find the capacitance of each capacitor A) 6 pF. B) 3 pF. C) 24 pF. D) None of the above. Show Answer Correct Answer: C) 24 pF. 13. What does an iron nail wrapped with copper wire and attached to a battery make? A) Metal magnet. B) Permanent magnet. C) Electromagent. D) Compass. Show Answer Correct Answer: C) Electromagent. 14. In series circuit, the lights are connected ..... to each other. A) Side by side. B) Parallel. C) Close by. D) Effectively. Show Answer Correct Answer: A) Side by side. 15. Made up of parts that work together to allow electricity to flow A) Resistor. B) Cell. C) Circuit. D) Terminal. Show Answer Correct Answer: C) Circuit. 16. Requires a source and special equipment to generate it A) Static Electricity. B) Current Electricity. C) All the above. D) None of the above. Show Answer Correct Answer: B) Current Electricity. 17. Working principle of Potentiometer is ..... A) Ohm's law. B) Wheatstone's principle. C) Emf $\propto$. D) None of the above. Show Answer Correct Answer: C) Emf $\propto$. 18. To decrease the amount of products purchased or produced with the intent of minimizing waste A) REDUCE. B) POLLUTION. C) RECYCLE. D) CONSUMER. Show Answer Correct Answer: A) REDUCE. 19. A negatively charged object will ..... a neutrally charged object. A) Repel. B) Discharge electrons. C) Atrract. D) Will high five. Show Answer Correct Answer: C) Atrract. 20. On which side of the circuits has the strongest voltage A) The positive side. B) The negative side. C) The wires nearest to the bulbs. D) The battery. Show Answer Correct Answer: A) The positive side. 21. One meter long metallic wire is broken into two unequal parts P and Q. The part P is uniformly extended into another wire R. Length of R is twice the length of P and the resistance of R is equal to that of Q. The ratio of resistances of P and R is ..... A) 1:4. B) 1:2. C) 3:2. D) None of these. Show Answer Correct Answer: A) 1:4. 22. How is electrical pressure measured? A) Ohm. B) Volts. C) Watts. D) Amps. Show Answer Correct Answer: B) Volts. 23. Anode is the ..... electrode of a battery A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: B) Negative. 24. In a series circuit, how does the total resistance compare to individual resistances? A) The total resistance is equal to the sum of individual resistances. B) The total resistance is greater than the individual resistances. C) The total resistance is the same as the largest individual resistance. D) The total resistance is less than the smallest individual resistance. Show Answer Correct Answer: B) The total resistance is greater than the individual resistances. 25. In a parallel circuit, how is current distributed? A) It remains constant in all branches. B) It is divided based on resistance. C) It flows only through the path of least resistance. D) It is shared between the different branches. Show Answer Correct Answer: D) It is shared between the different branches. ← 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