Q.

In the presence of an applied electric field (E) in a metallic conductor

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a

The electrons move in a direction opposite to E

b

The electrons move randomly but slowly drift in a direction opposite to E

c

The electrons may move in any direction randomly, but slowly drift in the direction of E

d

The electrons move in the direction of E

answer is D.

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Detailed Solution

Force acting on an electron in an electric field,
F =  e E
where -ve sign represents that force acts opposite to the direction of applied electric field.

The electrons move randomly due to thermal agitation but slowly drift in a direction opposite to E due to the above force.

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