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CTET Prep: Science Questions - Physics - Electricity and Magnetism
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Electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interactions of atoms and molecules.

CTET Prep: Science Questions - Physics - Electricity and Magnetism
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25 Questions

1. A charge particle moves with velocity V  in a uniform magnetic field B  . The magnetic force experienced by the particle is
2. Two wires have their lengths, diameters and resistivities all in the ratio of 1 : 2 : 1. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is
3. Potentiometer measures potential more accurately because
4. In electric supply lines in India, which parameter is kept constant?
5. For measuring very high temperature, we use
6. If the length of a wire is doubled and its cross-section is also doubled, then its resistance will
7. What is the order of magnitude of electric resistance of the human body (dry)?
8. When an AC source is connected across a resistor
9. When an ebonite rod is rubbed with fur, the charge acquired by the fur is
10. Ampere rule is used to find the
11. A particle is moving in a uniform magnetic field.
12. Metals are good conductor of heat than insulator because
13. The intensity of a magnetic field is defined as the force experienced by a
14. In the electrical circuit (ABC) as shown in the figure given below, the resistance R1, R2 and R3 are same and equal to 30 W. If a source of voltage 2V is connected across one arm, the current drawn from the voltage source is 2V + – B R2 R3 A R1
15. Five bulbs each rated as 220V 100 W burnt 4 hours. What is the cost of electricity consumed it the rate is 50 paise per unit?
16. The circuit element where the impressed voltage is always in phase with the resulting current is
17. An electron volt is equal to
18. Which of the following is not the cause of low conductivity of electrolyte?
19. By inserting a soft iron piece into solenoid, the strength of the magnetic field
20. Two charges of 1 C and 5 C are placed at some distance in air. The ratio of the forces acting on them is
21. Consider the following statements: An ordinary light bulb has a rather short life because the
1. Filament wire is not uniform.
2. Bulb cannot be evacuated completely.
3. Wires supporting the filament melt at high temperatures. Which of the above statements are correct?
22. The material of a permanent magnet has
23. An example of a non-ohmic device is
24. When a glass rod is rubbed with silk, both glass rod and silk
25. The unit of magnetic flux is

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