Why electric field inside a conductor is zero when placed inside external field?
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Hey.
Here is the answer.
In a conductor there are free charges (free to move throughout the bulk of conductor). So, in presence of external field, these charges experience a force. These charges rearrange themselves until they no longer experience a force.
As electric field is switched on, electrons move against electric field and accumulate at one side of metal. Naturally, other side gets positively charged. So, the result is an internal field due to accumulation of charges. The charges in middle stop moving a bit later because the internal field has exact same strength as external field.
Inside the conductor, now there are actually 2 equally balanced opposite Electric Fields. So net field inside conductor is zero.
Thanks.
Here is the answer.
In a conductor there are free charges (free to move throughout the bulk of conductor). So, in presence of external field, these charges experience a force. These charges rearrange themselves until they no longer experience a force.
As electric field is switched on, electrons move against electric field and accumulate at one side of metal. Naturally, other side gets positively charged. So, the result is an internal field due to accumulation of charges. The charges in middle stop moving a bit later because the internal field has exact same strength as external field.
Inside the conductor, now there are actually 2 equally balanced opposite Electric Fields. So net field inside conductor is zero.
Thanks.
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