This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 12 Electricity – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 12 Electricity Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Two wires A and B of equal masses and of the same material are taken.the lenght of the wire A is half the lenght of wire B. if the resistance of the wire A is 24 ohm, the resistances of wire B will be A) 96 ohm. B) 12 ohm. C) 48 ohm. D) 4 ohm. Show Answer Correct Answer: A) 96 ohm. 2. Let's think:If the voltage is increased and the resistance stays the same, current will ..... A) Increase. B) Decrease. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increase. 3. A voltmeter is used to find the potential difference in any electric circuit which of the given statements are correct A) A voltmeter is a high resistance device and is connected in series circuit. B) A voltmeter is a low resistance device and is connected in parallel circuit. C) A voltmeter is a low resistance device and is connected in series circuit. D) A voltmeter is a high resistance device and is connected in parallel circuit. Show Answer Correct Answer: D) A voltmeter is a high resistance device and is connected in parallel circuit. 4. SI unit of specific resistance is A) Volt. B) Ohm. C) Ampere. D) Ohm metre. Show Answer Correct Answer: D) Ohm metre. 5. The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light. A) Voltage. B) Current. C) Resistance. D) Circuit. Show Answer Correct Answer: C) Resistance. 6. Resistivity of a metal depends on A) Lenght. B) Area of cross section. C) All of the above. D) None of the above. Show Answer Correct Answer: D) None of the above. 7. One horsepower is equal to A) 764 watt. B) 746 watt. C) 647 watt. D) 674 watt. Show Answer Correct Answer: B) 746 watt. 8. A coil in the heater consume power P on passing current. If it is cut into halves and joined in parallel, it will consume power- A) P. B) P2. C) 2p. D) 4P. Show Answer Correct Answer: D) 4P. 9. Current is ..... A) Moving protons. B) Moving electrons. C) Measured in volts. D) Measured in ohms. Show Answer Correct Answer: B) Moving electrons. 10. A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is- A) 2.5 A. B) 5.0 A. C) 7.5 A. D) 10 A. Show Answer Correct Answer: D) 10 A. 11. A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 $\Omega$. The current passing through it is A) 2 A. B) 4 A. C) 8 A. D) 16 A. Show Answer Correct Answer: C) 8 A. 12. The SI unit of resistivity is A) Ohm, $\Omega$. B) Ohm meter, $\Omega$ m. C) Meter, m. D) None of the above. Show Answer Correct Answer: B) Ohm meter, $\Omega$ m. 13. In the rule of Om is shown between two factors, namely A) Electric current and divisions. B) The divisions and the divisions. C) Electric rods and electric heating. D) The natural quality and heat of the carrier. Show Answer Correct Answer: A) Electric current and divisions. 14. What is the highest and lowest total resistance which can be secured by combination of four coils of ressistance 4ohms, 8ohms, 12ohms and 24ohms A) 24, 2. B) 36, 2. C) 48, 2. D) 52, 4. Show Answer Correct Answer: C) 48, 2. 15. SI unit of resistance is A) That. B) Joule. C) Ohm. D) Ohmmeter. Show Answer Correct Answer: C) Ohm. 16. What is the effect of temperature on the resistance of a conductor? A) The resistance of a conductor remains constant regardless of temperature. B) Temperature has no effect on the resistance of a conductor. C) The resistance of a conductor decreases with temperature. D) The resistance of a conductor increases with temperature. Show Answer Correct Answer: D) The resistance of a conductor increases with temperature. 17. What is the significance of a fuse in an electrical circuit? A) The significance of a fuse in an electrical circuit is to protect the circuit from overcurrent by breaking the circuit when the current exceeds safe levels. B) A fuse is used to enhance the voltage in an electrical circuit. C) A fuse increases the current flow in a circuit. D) A fuse acts as a switch to turn the circuit on and off. Show Answer Correct Answer: A) The significance of a fuse in an electrical circuit is to protect the circuit from overcurrent by breaking the circuit when the current exceeds safe levels. 18. Electric potential is a: A) Sometimes scalar and sometimes vector. B) Neither scalar nor vector. C) Scalar quantity. D) Vector quantity. Show Answer Correct Answer: C) Scalar quantity. 19. What happens to the current in a series circuit if one component is removed? A) The current in the entire circuit stops. B) The current in the entire circuit increases. C) The current in the entire circuit stays the same. D) None of the above. Show Answer Correct Answer: A) The current in the entire circuit stops. 20. Which is the right form of Ohm's Law? A) V=I/R. B) V=R/I. C) I=V/R. D) I=R/V. Show Answer Correct Answer: C) I=V/R. 21. There is no flow of current between two charged bodies when connected because they have same A) Quantity of charge. B) Ratio of potential per unit charge. C) Potential difference. D) Capacity. Show Answer Correct Answer: C) Potential difference. 22. The space around a magnet where the force of a magnet can attract best is called ..... A) Magnetism. B) Bar magnet. C) Horseshoe magnet. D) Magnetic field. Show Answer Correct Answer: D) Magnetic field. 23. Resistance of alloys decreases with increase in temprature A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. SI UNIT HEAT A) Calorie. B) Watt. C) Joule. D) Volt. Show Answer Correct Answer: C) Joule. 25. Give the name of materials which contain lot of free electrons A) Insulators. B) Conductors. C) Semi conductors. D) None of the above. Show Answer Correct Answer: B) Conductors. ← PreviousNext →Related QuizzesClass 10 Science Chapter 12 Electricity Quiz 1Class 10 Science Chapter 12 Electricity Quiz 2Class 10 Science Chapter 12 Electricity Quiz 3Class 10 Science Chapter 12 Electricity Quiz 4Class 10 Science Chapter 12 Electricity Quiz 5Class 10 Science Chapter 12 Electricity Quiz 6Class 10 Science Chapter 12 Electricity Quiz 7Class 10 Science Chapter 12 Electricity Quiz 8Class 10 Science Chapter 12 Electricity Quiz 10Class 10 Science Chapter 12 Electricity Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books