Question

There is an electric field E along X-direction. If the work done on moving a charge 0.2 C through a distance of 2m along a line making an angle ${60}^{\circ }$ with the X-axis is 4.0, what is the value of E

• A. $\sqrt{3}N/C$
• B. 4 N/C
• C. 5 N/C
• D. None of these

Answer 1

The correct option is D None of these

$W=qV=qE.d$

$\Rightarrow 4=0.2\times E\times \left(2cos{60}^{\circ }\right)$
$=0.2E\times (2\times 0.5)$
$\therefore E=\frac{4}{0.2}=20N{C}^{-1}$