This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which electromagnet would have the most strength? A) An electromagnet with 5 coils. B) An electromagnet with 10 coils. C) An electromagnet with 15 coils. D) An electromagnet with 20 coils. Show Answer Correct Answer: D) An electromagnet with 20 coils. 2. Kirchhoff's junction and loop rules of electrical circuits are consequences of ..... A) Conservation of energy. B) Conservation of electric charge and energy respectively. C) Conservation of electric charge. D) Conservation of energy and electric charge respectively. Show Answer Correct Answer: B) Conservation of electric charge and energy respectively. 3. What is the property of a material that determines its resistance? A) Capacitance. B) Inductance. C) Conductivity. D) Resistivity. Show Answer Correct Answer: D) Resistivity. 4. Find the emf of cell which balance against a length of 280cm of potentiometer wire, given potential difference per cm wire as 0.008 A) 1.08 V. B) 2.04 V. C) 2.24 V. D) 3.25 V. Show Answer Correct Answer: C) 2.24 V. 5. Electric potential difference is ..... A) The product of kinetic energy and charge. B) The product of potential energy and charge. C) The change in kinetic energy per unit of charge. D) The change in potential energy per unit of charge. Show Answer Correct Answer: D) The change in potential energy per unit of charge. 6. A wire has a resistance of 3.1 ohm at 30$^{0}$ C and a resistance 4.5 ohm at 100$^{0}$ C. The temperature coefficient of resistance of the wire is A) 0.0064 $^{o}$ C$^{-1}$. B) 0.0025 $^{o}$C$^{-1}$. C) 0.0034 $^{O}$C$^{-1}$. D) 0, 0012 $^{0}$C$^{-1}$. Show Answer Correct Answer: A) 0.0064 $^{o}$ C$^{-1}$. 7. From which electrode does the energy flow from in a circut? A) Positive to negavtive. B) Neg to posTagslol. C) All the above. D) None of the above. Show Answer Correct Answer: B) Neg to posTagslol. 8. Which statement is true about convex mirror? A) Image formed is virtual and diminished. B) Have a positive value of focal length. C) Image formed is real and diminished. D) Image formed is real and magnified. Show Answer Correct Answer: A) Image formed is virtual and diminished. 9. Which cell has the reversible chemical reaction A) Primary Cell. B) Secondary Cell. C) All the above. D) None of the above. Show Answer Correct Answer: B) Secondary Cell. 10. For a) metals and b) semiconductors, the number of charge carriers A) Remains constant b)increases. B) Increases b) increases. C) Decreases b) remains constant. D) Increases b) increases. Show Answer Correct Answer: A) Remains constant b)increases. 11. What does DC stand for? A) Power plants. B) Direct current. C) Alternating current. D) None of the above. Show Answer Correct Answer: B) Direct current. 12. This is how much a material opposes, or resists, the flow of electric current. A) Filament. B) Resistance. C) Electromagnet. D) None of the above. Show Answer Correct Answer: B) Resistance. 13. Which of the items is a conductor? A) Copper. B) Foam. C) Cardboard. D) Wood. Show Answer Correct Answer: A) Copper. 14. Three wires of resistance 3 ohms are connected in parallel. the effective resistance of the configuration is A) 1 ohm. B) 2 ohm. C) 6 ohm. D) 9 ohm. Show Answer Correct Answer: A) 1 ohm. 15. How does electricity travel from power plants to your house? A) It travels through the air as electromagnetic waves. B) Through a series of generators. C) Through a series of many transformers. D) Through transmission wires. Show Answer Correct Answer: D) Through transmission wires. 16. Jacob tested a material in the science lab. He put it between a wire and a battery in a closed circuit. What evidence might have led him to decide the material is a conductor? A) The battery lost its energy. B) He created a short circuit. C) The wire did not get hot. D) The light bulb turned on. Show Answer Correct Answer: D) The light bulb turned on. 17. Which of the following represents the definition of a volt? A) C/s. B) J/C. C) JC. D) J. Show Answer Correct Answer: B) J/C. 18. Proton possess ..... charge whereas electron possess ..... charge. A) Neutral, positive. B) Negative, positive. C) Positive, negative. D) None of the above. Show Answer Correct Answer: C) Positive, negative. 19. The unit of electric power is A) Volt. B) Joule. C) KWh. D) Watt. Show Answer Correct Answer: C) KWh. 20. In electrolyte charge carries are A) Holes. B) Electrons. C) Ions. D) Both options 2 and 3. Show Answer Correct Answer: C) Ions. 21. Kilowatt hour is unit of A) Energy. B) Power. C) Momentum. D) Force. Show Answer Correct Answer: A) Energy. 22. Which of these is not a magnetic material? A) Aluminium. B) Steel. C) Nickel. D) Iron. Show Answer Correct Answer: A) Aluminium. 23. What happens to the current when a switch opens in a circuit? A) It reverses direction. B) It decreases. C) It increases. D) It stops flowing. Show Answer Correct Answer: D) It stops flowing. 24. In a simple series circuit, why does the bulb light when you close the switch? A) A. Because the switch produces electricity. B) B. Because closing the switch completes the circuit. C) C. Because closing the switch breaks the circuit. D) None of the above. Show Answer Correct Answer: B) B. Because closing the switch completes the circuit. 25. What is the unit of charge measured in? A) Coulombs. B) Joules. C) Amperes. D) Volts. Show Answer Correct Answer: A) Coulombs. ← 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