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Question
Two parallel metal plates having charge +Q and −Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will
Two parallel metal plates having charge +Q and −Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will
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Solution
The correct option is C Decrease
Kerosene will act as a dielectric medium. There will be induced charges at the dielectric surfaces due to which an electric field will come into the picture. The electric field due to induced charges will be opposite in direction to the original direction of the electric field due to the plates, and therefore the net electric field between the plates will have comparatively less magnitude.
Hence, option (c) is correct.
Key concept- Net electric field in the presence of a dielectric medium.
Kerosene will act as a dielectric medium. There will be induced charges at the dielectric surfaces due to which an electric field will come into the picture. The electric field due to induced charges will be opposite in direction to the original direction of the electric field due to the plates, and therefore the net electric field between the plates will have comparatively less magnitude.
Hence, option (c) is correct.
| Key concept- Net electric field in the presence of a dielectric medium. |
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