First slide

Electric Flux

Question

In a certain region of space, there exists a uniform electric field of value $2 \times 10^{2} \hat{k} V m^{- 1}$ . A rectangular coil of dimension 10 cm × 20 cm is placed in the xy plane. The electric flux through the coil is

Easy

A

zero
B

30 Vm
C

40 Vm
D

50 Vm

Solution

$\vec{E} = 2000 \hat{k}, \vec{A} = 10 \times 20 \times 10^{- 4} \hat{k}$ , $ϕ = \vec{E} . \vec{A} = 40 V m$

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