What do you know about the electrostatic shielding? Write its some applications.
Asked by Topperlearning User | 23rd Apr, 2015, 10:34: AM
The phenomenon of making a region free from any electric field is called electrostatic shielding.
- In lightening thunderstorm, it is safe to sit inside the car, rather than near a tree or in open ground. The metallic body of the car acts as electrostatic shielding from lightening.
- In coaxial cable, the outer conductor connected to the ground provides an electrical shield to the signals carried by the central conductor.
Answered by | 23rd Apr, 2015, 12:34: PM
- What are conductors and insulators?
- Why insulators are dielectrics?
- What do you understand by bound and free charges? Explain briefly.
- Why the electrostatic field is zero in the interior of a conductor?
- Explain why just outside the surface of a charged conductor, electric field is normal to the surface.
- Explain why the net charge in the interior of a conductor is zero and any excess charge given to the conductor resides at its surface only.
- Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
- State four important properties exhibited when a conducting body is placed in an electric field?
- An inflated balloon is charged by rubbing with fur. Will it stick readily to a conducting wall or to an insulating wall?
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