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Vivek Kohli
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Asked: 2025-02-20T05:03:25+00:00 In:

A dipole is placed parallel to electric field. If W is the work done in rotating the dipole from 0“ to 60°, then work done in rotating it from 0° to 180° is

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Poll Results

66.67%(a) 2 W ( 2 voters )
0%(b) 3 W
33.33%(c) 4 W ( 1 voter )
0%(d) W/2
Based On 3 Votes

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The work done in rotating a dipole in a uniform electric field is given by W = PE (cosθ₁ – cosθ₂). From 0° to 60°, work done is W = PE(1 – 1/2) = PE/2. From 0° to 180°, work done is PE(1 – (-1)) = PE(2) = 4W. Hence, the answer is (c) 4W.
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