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Question

Electric field E=4t ^i exists in space. Displacement current associated with a square of side a = 2cm with its plane perpendicular to ε at t = 2 sec will be

A
28×1015A
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B
112×1015A
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C
14×1015A
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D
7×1015A
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Solution

The correct option is C 14×1015A
Displacement current id=ε0dϕdt=ε0ddt(E.A)
id=ε0ddt4t.a2=ε0a24=8.8×1012×4×104×4=14×1015A

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