Question

there is an electric field E in x-directionif the work done on moving a charge of 0.2c through a distance of 2m along a line making an angle 60 with x axis is4j then what is the value of E

Answer 1

$W=F.S=FS cos(\theta)$
now,
$F=qE$
so,
$W=qES cos(\theta)$
$4=0.2*E*2*cos(60)$
get E by rearranging.