This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Kirchhoff's current law states that A) Net current flow at the junction is positive. B) Algebraic sum of the currents meeting at the junction is zero. C) No current can leave the junction without some current entering it. D) Total sum of currents meeting at the junction is zero. Show Answer Correct Answer: B) Algebraic sum of the currents meeting at the junction is zero. 2. How many electrons pass through a lamp in 1 minute if the current is 300 mA A) 1.125 X $10^{20}$. B) $10^{25}$. C) 1.6 X $10^{-19}$. D) None of the above. Show Answer Correct Answer: A) 1.125 X $10^{20}$. 3. The particle that revolves around the nucleus. A) Proton. B) Electron. C) Neutron. D) None of the above. Show Answer Correct Answer: B) Electron. 4. In a parallel circuit, how does the total current compare to individual branch currents? A) The total current is the sum of the individual branch currents. B) The total current is independent of the branch currents. C) The total current is equal to the largest branch current. D) The total current is the average of the branch currents. Show Answer Correct Answer: A) The total current is the sum of the individual branch currents. 5. This force occurs when ions/atoms create attractive and repulsive forces. A) Electric. B) Magnetic. C) Electromagnetic. D) None of the above. Show Answer Correct Answer: A) Electric. 6. What quantity describes the opposition to the flow of electrons in an electrical circuit? A) Voltage. B) Electric Current. C) Electric Resistance. D) Electrical Power. Show Answer Correct Answer: C) Electric Resistance. 7. Two wires made of the same material have the same lengths but different diameters. They are connected in series to a battery. The quantity that is the same for the wires is: A) The end-to-end potential difference. B) The current. C) The current density. D) The electric field. Show Answer Correct Answer: B) The current. 8. With the engine running the charging system produces 14.5 Volts what would the current flow be if a resistance of 6 Ohms was present A) 2.41 Ohms. B) 2.52 Ohms. C) 2.1 Ohms. D) 0.3333 Ohms. Show Answer Correct Answer: A) 2.41 Ohms. 9. An example of an insulator is: A) Iron. B) Silver. C) Copper wire. D) Rubber. Show Answer Correct Answer: D) Rubber. 10. In order to work, an electromagnet must be part of A) An electric crane. B) An electrical circuit. C) An open circuit. D) Battery. Show Answer Correct Answer: B) An electrical circuit. 11. A string of lights is lit. They are part of a series circuit. One of the bulbs is removed. The rest of the lights will A) Go out. B) Stay lit. C) Get brighter. D) Get dimmer. Show Answer Correct Answer: A) Go out. 12. Conventionally, current is described as flowing from the ..... terminal of a battery to the ..... terminal. A) Negative negative. B) Negative positive. C) Positive negative. D) Positive positive. Show Answer Correct Answer: C) Positive negative. 13. What is the relationship between terminal voltage and electromotive force (emf) when current is drawn from a cell? A) Terminal voltage is independent of emf. B) Terminal voltage equals emf. C) Terminal voltage is less than emf. D) Terminal voltage is greater than emf. Show Answer Correct Answer: C) Terminal voltage is less than emf. 14. Resistance is measured in what unit? A) Ohms. B) Amps. C) Watts. D) Volts. Show Answer Correct Answer: A) Ohms. 15. Which of the following correctly describes one way in which static electricity is different from the current electricity that is used in homes? A) Static electricity is a quick release of energy. B) Static electricity requires magnets and coils of wire. C) Static electricity flows at a constant rate. D) Static electricity always goes in the same direction. Show Answer Correct Answer: A) Static electricity is a quick release of energy. 16. Complete the following sentence:A current is defined as A) Stationary electrons. B) The energy in a cell. C) A net flow of charge. D) Electrons. Show Answer Correct Answer: C) A net flow of charge. 17. What is one problem with using a series circuit? A) It has a lot of series. B) If one goes down, they all go down!. C) It doesn't work properly. D) There are no problems. Show Answer Correct Answer: B) If one goes down, they all go down!. 18. Current electricity is ..... A) The flow of charged (positively) particles through an insulator. B) The flow of (negatively) charged particles through a conductor. C) I dont know. D) I dont understand. Show Answer Correct Answer: B) The flow of (negatively) charged particles through a conductor. 19. What is the unit of specific resistivity? A) Ohm cm$^{2}$. B) Ohm cm$^{-1}$. C) Ohm cm. D) Ohm cm$^{-2}$. Show Answer Correct Answer: C) Ohm cm. 20. Two bulbs of 250 V and 100 W are first connected in series and then in parallel with a supply of 250 V. Total power in each of the cases will be ..... respectively. A) 50 W, 100 W. B) 50 W, 200 W. C) 100 W, 50 W. D) 200 W, 150 W. Show Answer Correct Answer: B) 50 W, 200 W. 21. Two wire of same material but of diffrent diameter carry the same current I.If the ratio of their diameter is 2:1 then corresponding ratio of theirmean drift velocities will be A) 4:1. B) 1:1. C) 1:2. D) 1:4. Show Answer Correct Answer: D) 1:4. 22. SI unit of electric current is ..... A) Volt. B) Coulomb. C) Ampere. D) Ohm. Show Answer Correct Answer: C) Ampere. 23. A series circuit has how many pathways for the electrons to flow? A) Two. B) One. C) Many. D) Zero. Show Answer Correct Answer: B) One. 24. True of False:A circuit must be open for electricity to flow and turn something on. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. Which of the following is a derived quantity? A) Mass. B) Time. C) Luminous Intensity. D) Weight. Show Answer Correct Answer: D) Weight. ← 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