Gen Studies (Electricity and Magnetism)
Description: Electricity and magnetism (D) | |
Number of Questions: 15 | |
Created by: | |
Tags: Electricity and magnetism (D) Science and Technology |
Consider the following: Assertion: Insulators do not allow the flow of current through themselves. Reason: They have no free charge carriers.
Consider the following statements:
- Ammeter is an instrument used to measure the magnetic field of an object.
- A voltmeter is an instrument used to measure voltage.
- In India, the household voltage is 440V, 50hz.
Which of the given statements is/are true?
Consider the following: Assertion: The conductivity of a superconductor is infinite. Reason: The resistance of superconductors is zero at low temperatures.
Which of the following is correct?
Consider the following statements: 1. In three pin switch, the pin of live wire is made bigger in size.
- Electricity transmitted along power lines is at very high voltages to reduce the loss of energy.
Which of the given statements is/are incorrect?
Which of the following statements regarding BEE (Bureau of Energy Efficiency) is/are correct? (1) The 5-star power saving label contains the information of resistance power of the electrical appliance. (2) Power labeling is mandatory for frost free refrigerator, air conditioner, tubular fluorescent lamp and distribution transformer.
Consider the following statements:
- The fuse should be connected to neutral wire of appliance to get the protection against the electric shock.
- The fuse wires are used for household supply of electricity should have high melting point for safety purpose.
Which of the given statements is/are correct?
Consider the following statements:
- In electric bells and loudspeaker, electromagnets are used.
- If a man moves constantly in the direction towards which his magnetic needle points, he would reach at South Pole.
Which of the given statements is/are correct?
If lightning strikes a moving car, and all the doors and windows of the car are closed, which of the following will happen?
Consider the following statements: 1. Iron, in contact with a magnet, cannot become a magnet.
- Alnico is used to make magnets. Which of the given statements is/are correct?
Consider the following statements:
- The purpose of choke in tube light is to increase the current. (2) Lightening in the sky is caused due to electric discharge produced by friction between clouds.
Which of the given statements is/are correct?
Consider the following statements:
- The heating of a current carrying conductor is caused due to repulsion between two opposite charged electrons.
- Rating is the method of connecting the metallic body of an electrical appliance to the earth with the help of a conducting wire.
Which of the given statements is/are correct?
A child rubs a rubber ruler and then puts it near some tiny pieces of paper. The paper pieces are then attracted to the ruler. Which of the following statements best explains the result?
Consider the following statements:
- In torch cell, photochemical reaction takes place.
- An electroencephalogram (EEG) is a test used to detect abnormalities related to electrical activity of the heart.
Which of the given statements is /are incorrect?
Which of the following is the principle of a traditional tape player, which is used to play music on a cassette tape?
Consider the following statements:
- When a bar magnet is cut into two equal halves, the pole strength of each piece becomes doubled.
- The ability of a material to remain magnetized after removal of the magnetizing force is known as retentivity. Which of the given statements is/are incorrect?