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Question
Assertion :There is no current in the metals in the absence of electric field. Reason: Motion of free electrons are random.
Assertion :There is no current in the metals in the absence of electric field. Reason: Motion of free electrons are random.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Electrons move in all directions haphazardly in metals. When an electric field is applied, each free electron acquire a drift velocity. There is a net flow of charge, which constitute current. In the absence of electric field this is impossible and hence, there is no current.
Electrons move in all directions haphazardly in metals. When an electric field is applied, each free electron acquire a drift velocity. There is a net flow of charge, which constitute current. In the absence of electric field this is impossible and hence, there is no current.
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