Two point charges and are held fixed at and

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

Problem

Two point charges

+q

and

-q

are held fixed at

(-a,0)

and

(a,0)

, respectively, in an

x

y

coordinate system. Then: (a) The electric field

\mathbf{E}

at all points on the

x

-axis has the same direction. (b)

\mathbf{E}

at all points on the

y

-axis is along

\hat{i}

. (c) Positive work is done in bringing a test charge from infinity to the origin. (d) All of the above.