Q.

In a certain region of space, there exists a uniform electric field of value 20×102k^Vm−1. A rectangular coil of dimension 10 cm x 20 cm is placed in the xy plane. The electric flux through the coil is

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a

zero

b

30 Vm

c

40 Vm

d

50 Vm

answer is C.

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Detailed Solution

Given : E→=2000k^Vm-1   and  A→=10×20×10−4k^m2 ⇒ϕ=E→⋅A→=40Vm
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In a certain region of space, there exists a uniform electric field of value 20×102k^Vm−1. A rectangular coil of dimension 10 cm x 20 cm is placed in the xy plane. The electric flux through the coil is