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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 steady current is flowing in a conductor of non-uniform crosssection. The charge passing through any cross-section per unit time is
2. A permanent magnet repels
3. Electric field intensity at a point a hollow charged spherical conductor
4. The SI unit of pole strength is
5. An electron is projected in the magnetic field along the lines of force
6. The unit of magnetic induction is
7. The electric current passing through a metallic wire produces heat because of
8. Magnetite is a/an
9. By inserting a soft iron piece into solenoid, the strength of the magnetic field
10. The North pole of the earth’s magnet is near the geographical
11. The time constant in seconds of an electrical circuit containing a capacitance of C units and resistance of R units. As shown in the figure,is given by C R Source voltage
12. Three different capacitors are connected in series, then
13. A magnetic field
14. A choke coil has
15. The susceptibility of a paramagnetic material
16. 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?
17. A particle of mass m and charges q travels from rest through a potential difference V. Its final energy is
18. Indiscriminate disposal of used fluorescent electric lamps causes mercury pollution in the environment. Why is mercury used in the manufacture of these lamps?
19. A proton, when accelerated through a potential difference of V volts, has an associated wavelength of l. In order to have the same associated wavelength, an a-particle must be accelerated through a potential difference of
20. The reciprocal of resistance is
21. When an AC source is connected across a resistor
22. Which of the following quantities remains constant in a step-down transformer?
23. The susceptibility of a paramagnetic material is
24. Magnetic dipole moment is a vector quantity directed from
25. The vertical component of earth’s magnetic field is zero

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