There is an electric field E in x- direction. If the work done on moving a charge 0.2 C through a distance of 2 m along a line making an angle 60° with the x- axis is 4.0, what is the value of E ?

Question

There is an electric field E in x- direction. If the work done on moving a charge 0.2 C through a distance of 2 m along a line making an angle 60° with the x- axis is 4.0, what is the value of E ? (A)  √3 N/C (B) 4 N/C (C) 5 N/C (D) None of these

Tardigrade Admin · Accepted Answer

W=qV=qE.d 4=0.2× E× (2 text cos text 60° ) 4=0.2× E× 2× 0.5 E=(4/0.2)=20 N/C

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

$3$ N/C

4 N/C

5 N/C

None of these

$W = q V = q E . d$
$4 = 0.2 \times E \times (2 cos 60^{\circ})$
$4 = 0.2 \times E \times 2 \times 0.5$
$E = \frac{4}{0.2} = 20 N / C$

Q. There is an electric field E in x− direction. If the work done on moving a charge 0.2C through a distance of 2m along a line making an angle 60∘ with the x− axis is 4.0, what is the value of E ?

3​ N/C