Question

Flux through the rectangular piece of area 10 cm by 20 cm when placed ( as shown in an uniform electric field of 200 N/C, ) is

• A. 4.0 $N{m}^2/C$
• B. 3.5 $N{m}^2/C$
• C. 2.5 $N{m}^2/C$
• D. zero

Answer 1

The correct option is C 2.5 $N{m}^2/C$

$E=3\times {10}^{3}N/C$

and square is parallel to $y-z$ plane, So, flux will be simply one multiplication of area of electric field which is as follows.

$=3\times \left({10}^3\right)\times 20\times \left({10}^{-9}\right)$

$=3Vm$