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Question
Laser diodes are placed in a spherical metallic cage and then the metallic cage is exposed to electric fields. Which of the following shows the correct path of lines of force via metallic cage?
Laser diodes are placed in a spherical metallic cage and then the metallic cage is exposed to electric fields. Which of the following shows the correct path of lines of force via metallic cage?
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Solution
The correct option is A
Explanation: Since the surface of the conductor is equipotential. Electric field inside the conductor is zero.
Option (a) is incorrect.
Electric fields are normal to the surface of the conductor.
Option (a) and (c) are incorrect.
In option (b), the direction of the electric field is different on opposite sides of the conductor.
Option (b) is incorrect.
Hence, option (d) is correct.
Explanation: Since the surface of the conductor is equipotential. Electric field inside the conductor is zero.
Option (a) is incorrect.
Electric fields are normal to the surface of the conductor.
Option (a) and (c) are incorrect.
In option (b), the direction of the electric field is different on opposite sides of the conductor.
Option (b) is incorrect.
Hence, option (d) is correct.
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