This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Electricity > Class 10 Science Chapter 12 Electricity – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 12 Electricity Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements are not true A) The voltmeter is connected in parallel with the known resistance. B) A single key is used to switch on/off in series circuit. C) The ammeter is connected in series circuit. D) The rheostat can only increase the resistance in electric circuit. Show Answer Correct Answer: D) The rheostat can only increase the resistance in electric circuit. 2. A resistance wire is cut into 2 equal pieces. The resistance of a piece after cutting A) More than double. B) Halves. C) Doubles. D) Remains same. Show Answer Correct Answer: B) Halves. 3. Keeping the potential difference constant, the resistance of a circuit is doubled. The current will become: A) Double. B) Four times. C) Half. D) One-fourth. Show Answer Correct Answer: C) Half. 4. Which type of current comes from a battery? A) Alternating current (AC). B) Direct current (DC). C) All the above. D) None of the above. Show Answer Correct Answer: B) Direct current (DC). 5. The SI unit of electric charge is A) Ampere A. B) Seconds t. C) Coulombs C. D) None of these. Show Answer Correct Answer: C) Coulombs C. 6. Which of the following is based on heating effect of electric current A) Electric fan. B) Electric geyser. C) Electric generator. D) All of the above. E) Electric motor. Show Answer Correct Answer: B) Electric geyser. 7. An electrical appliance has a resistance of 25 $\Omega$. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be: A) 0.92 A. B) 92 A. C) 9.2 A. D) 2.9 A. Show Answer Correct Answer: C) 9.2 A. 8. How the charge will flow? A) By heating them. B) By applying potential difference. C) Both. D) None of these. Show Answer Correct Answer: B) By applying potential difference. 9. If the Voltage stays the same and Resistance is increased, Current will ..... ? A) Increase. B) Decrease. C) Stay the same. D) None of these. Show Answer Correct Answer: B) Decrease. 10. Three resistances of 4 ohm are connected is form of triangle what is it's resistance A) 3/8. B) 4/7. C) 3/6. D) 1/8. Show Answer Correct Answer: A) 3/8. 11. According to Ohm's Law, the potential difference across the ends of a resistor is directly proportional to the ..... through it, provided its ..... remains constant. A) Current, temperature. B) Physical condition, current. C) Temperature, current. D) Physical condition, temperature. Show Answer Correct Answer: A) Current, temperature. 12. When electric current is passed, electrons move from: A) Low potential to high potential. B) Against the direction of current. C) High potential to low potential. D) In the direction of the current. Show Answer Correct Answer: A) Low potential to high potential. 13. If lenght of a copper wire is incresed by 5% due to streching what will be the percentage increase in it's resistances A) 10.25%. B) 11.5%. C) 12%. D) 20%. Show Answer Correct Answer: A) 10.25%. 14. The commercial unit of electrical energy is A) Joules, j. B) Watt second, Ws. C) Kilowatt hour, kWh. D) None of the above. Show Answer Correct Answer: C) Kilowatt hour, kWh. 15. What is the definition of current? A) Rate of flow of neutrons. B) Rate of flow of energy. C) Rate of flow of protons. D) Rate of flow of charges. Show Answer Correct Answer: D) Rate of flow of charges. 16. When connecting the resistant in a parallel order ..... A) Current. B) Operate. C) Both. D) No one. Show Answer Correct Answer: B) Operate. 17. What is the total power consumed in a series circuit with three 10W bulbs? A) 25w. B) 20W. C) 30W. D) 15W. Show Answer Correct Answer: C) 30W. 18. Which of the following best explains an electric current? A) An electric current is the flow of positive charges in a circuit. B) An electric current is the flow of atoms in a circuit. C) An electric current is the flow of neutrons in a circuit. D) An electric current is the flow of electrons in a circuit. Show Answer Correct Answer: D) An electric current is the flow of electrons in a circuit. 19. True or False:All metals are attracted to magnet. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 20. Which of the following gases are filled in electric bulbs? A) Helium and Neon. B) Neon and Argon. C) Argon and Hydrogen. D) Argon and Nitrogen. Show Answer Correct Answer: D) Argon and Nitrogen. 21. What is Potential Difference? A) Difference of Ohm. B) Difference of Electric Pressure. C) Difference of Resistor. D) Difference of Electric Current. Show Answer Correct Answer: B) Difference of Electric Pressure. 22. If the potential difference across the ends of a conductor is doubled, the current flowing through it, ..... A) Is zero. B) Gets half. C) Gets doubled. D) Remain same. Show Answer Correct Answer: C) Gets doubled. 23. Insulated wire with red colour coding is A) Neutral wire. B) Live wire. C) Fuse wire. D) Ground wire. Show Answer Correct Answer: B) Live wire. 24. A device that controls the continuity of electric current in the power circuit A) Amit. B) Switch or plug ki. C) Electric cell. D) Electric bulb. Show Answer Correct Answer: C) Electric cell. 25. What is formula of Electric current? A) $Q=\frac{I}{T}$. B) $I=\frac{Q}{T}$. C) $I2=\sqrt[2]{\Delta}$. D) $ V = go $. Show Answer Correct Answer: B) $I=\frac{Q}{T}$. 26. The continuous flow of electric charges through a material is called ..... A) Electric Current. B) Electric Circuit. C) Electric Force. D) Electric Field. Show Answer Correct Answer: A) Electric Current. 27. In a series circuit, the total resistance is: A) The sum of individual resistances. B) The product of individual resistances. C) Equal to the smallest resistance. D) Equal to the largest resistance. Show Answer Correct Answer: A) The sum of individual resistances. 28. The property of a metal to resist the flow of charges is called A) Current, I. B) Potential difference, V. C) Resistance, R. D) None of the above. Show Answer Correct Answer: C) Resistance, R. 29. The unit of potential difference A) Ampere. B) Faraday. C) Watt. D) Volt. Show Answer Correct Answer: D) Volt. 30. Which of the following statements are correct about resistance?A. Resistance of a conductor is directly proportional to the length.B. Resistance of a conductor is directly proportional to the area of cross-section.C. Resistance of a conductor depends on the nature of the material.D. Resistance of conductor is inversely proportional to the length. A) A, B and D. B) A and C. C) A and B. D) A and D. Show Answer Correct Answer: B) A and C. 31. An alloy of nickel and chromium is used as the heating element. Because A) It has high resistivity. B) It has a high melting point. C) It is not easily oxidized. D) All the above. Show Answer Correct Answer: D) All the above. 32. In every resistance, the current amount of current in connection with the resistance ..... A) Is more. B) Is divided. C) Decreases. D) Remains alike. Show Answer Correct Answer: D) Remains alike. 33. What resistance is needed to cause a 50A current flow because of a 500V battery? A) 2500. B) 5th. C) 550. D) 10th. Show Answer Correct Answer: D) 10th. 34. Coulomb is the SI unit of: A) Potential difference. B) Current. C) Charge. D) Resistance. Show Answer Correct Answer: C) Charge. 35. Electricity is the flow of ..... A) Protons. B) Neutrons. C) Electrons. D) None of the above. Show Answer Correct Answer: C) Electrons. 36. Which of the following statements is correct about electrical insulators? A) They do not contain any atoms. B) Their protons are not allowed to move about freely. C) The electrons are not able to move about freely. D) They are good at conducting heat only. Show Answer Correct Answer: C) The electrons are not able to move about freely. 37. You are given 'n' number of $100\Omega$ $10\Omega$ A) 30. B) 10. C) 1. D) 20. Show Answer Correct Answer: B) 10. 38. Assertion:LED bulbs are far better than incandescent bulbs.Reason:LED bulbs consume less power than incandescent bulbs. A) If both the assertion and the reason are true and the reason is the correct explanation of the assertion. B) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion. C) If the assertion is true, but the reason is false. D) If the assertion is false, but the reason is true. Show Answer Correct Answer: A) If both the assertion and the reason are true and the reason is the correct explanation of the assertion. 39. What is the lowest resistance substance A) Chromium. B) Iron. C) Silver. D) Copper. Show Answer Correct Answer: C) Silver. 40. Electric current is measured by A) Ammeter. B) Voltmeter. C) Resistance. D) Impedance. Show Answer Correct Answer: A) Ammeter. 41. The rheostat is used in the circuit to A) Increase the magnitude of the current. B) Decrease the magnitude of the current. C) Increase or decrease the magnitude of current. D) None of the above. Show Answer Correct Answer: C) Increase or decrease the magnitude of current. 42. ..... stops the flow of electricity. A) A conductor. B) An insulator. C) A magnet. D) None of the above. Show Answer Correct Answer: B) An insulator. 43. What is the unit of the electrical charge A) Volt. B) Empeare. C) Jolly. D) Colombo. Show Answer Correct Answer: D) Colombo. 44. For resistors connected in parallel, the effective resistance is A) The product of the individual resistance. B) The product of the reciprocal of the individual resistance. C) The sum of the reciprocal of the individual resistance. D) The sum of the individual resistance. Show Answer Correct Answer: C) The sum of the reciprocal of the individual resistance. 45. . If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be A) 200 %. B) 400 %. C) 300 %. D) 100 %. Show Answer Correct Answer: C) 300 %. 46. Voltage is the measure of the ..... A) Difference in electrical energy between 2 parts of a circuit. B) Amount of electric charge that flows through a circuit. C) All the above. D) None of the above. Show Answer Correct Answer: A) Difference in electrical energy between 2 parts of a circuit. 47. JJ Thomson did the electron naming in what year A) 1895. B) 1897. C) 1896. D) 1898. Show Answer Correct Answer: B) 1897. 48. Tingston's point is a dirty A) 4000. B) 3380. C) 3000. D) 3300. Show Answer Correct Answer: B) 3380. 49. 8. The relation between potential difference (V) and current (I) is: A) V $\alpha$ 1/I. B) V $\alpha$ I. C) V a i2. D) V2 $\alpha$ I. Show Answer Correct Answer: B) V $\alpha$ I. 50. A resistance wire is stretched so as to increase it's length 3 times. The resistance of the wire after stretching A) Decreases 9 times. B) Increases 9 times. C) Increases 3 times. D) Decreases 3 times. Show Answer Correct Answer: B) Increases 9 times. 51. A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly A) 10 $^{2}$. B) 10$^{ 18 }$. C) 10$^{ 16}$. D) 10 $^{20}$. Show Answer Correct Answer: D) 10 $^{20}$. 52. Which of the following substances is the best conductor of electricity? A) Glass. B) Mercury. C) Water. D) Wood. Show Answer Correct Answer: B) Mercury. 53. Identify the conductor below. A) Cloth rag. B) Plastic bottle. C) Gold ring. D) None of the above. Show Answer Correct Answer: C) Gold ring. 54. A charge of 60 coulomb flows through a bulb in 5 minutes what is the current through the bulb? A) 2 A. B) 12 A. C) 0.12 A. D) 0.2 A. Show Answer Correct Answer: D) 0.2 A. 55. What is voltage? A) Flow of electrical charge. B) Pressure from power to push electrons. C) Limits the flow of electrons. D) None of the above. Show Answer Correct Answer: B) Pressure from power to push electrons. 56. What is the relationship between current, voltage, and resistance in an electrical circuit? A) Current is equal to voltage divided by resistance. B) Current is equal to resistance divided by voltage. C) Resistance is equal to current divided by voltage. D) Voltage is equal to current divided by resistance. Show Answer Correct Answer: A) Current is equal to voltage divided by resistance. 57. A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor? A) 0.16 A. B) 0.15 A. C) 6.25 A. D) 3600 A. Show Answer Correct Answer: A) 0.16 A. 58. The resistance of a thin wire is more than that of a thick wire of the same length and same material. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 59. SI unit of current is A) Volts. B) Ampere. C) Ohms. D) Coulomb. Show Answer Correct Answer: B) Ampere. 60. What happens when two north poles of a magnet are placed together? A) They attract. B) They repel. C) The strength of the magnet is doubled. D) They cancel each other out. Show Answer Correct Answer: B) They repel. ← PreviousNext →Related QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 12 Electricity Quiz 1Class 10 Science Chapter 12 Electricity Quiz 2Class 10 Science Chapter 12 Electricity Quiz 4Class 10 Science Chapter 12 Electricity Quiz 5Class 10 Science Chapter 12 Electricity Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books