Charges and lie inside and outside

PHYSICS · Multi correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields

Problem

Charges

q_1

and

q_2

lie inside and outside, respectively, a closed surface

S

. Let

\mathbf{E}

be the electric field at any point on

S

and let

\Phi

be the flux of

\mathbf{E}

over

S

. (a) If

q_1

changes, both

\mathbf{E}

and

\Phi

will change. (b) If

q_2

changes,

\mathbf{E}

will change but

\Phi

will not change. (c) If

q_1=0

and

q_2\ne0

, then

\mathbf{E}\ne0

but

\Phi=0

. (d) If

q_1\ne0

and

q_2=0

, then

\mathbf{E}=0

but

\Phi\ne0