A pair of oppositely charged parallel plates lies in the -plane

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A pair of oppositely charged parallel plates lies in the

xy

-plane. The line perpendicular to the plates makes an angle of

30^{\circ}

with the positive

x

-axis. The potential difference between the plates is

450\,\text{V}

, and the separation measured along the perpendicular line is

0.060\,\text{m}

. What is the

x

-component

E_x

of the uniform electric field between the plates? (a)

7.5\times10^{3}\,\text{V}\!\bigm/\!\text{m}

(b)

6.5\times10^{3}\,\text{V}\!\bigm/\!\text{m}

(c)

3.8\times10^{3}\,\text{V}\!\bigm/\!\text{m}

(d)

8.7\times10^{3}\,\text{V}\!\bigm/\!\text{m}