Electrostatics
454 Questions
Start JEE Mains Test
2003
Q451
JEE Mains
MCQ
10 Mar 2026
If the electric flux entering and leaving an enclosed surface respectively is ${\phi _1}$ and ${\phi _2},$ the electric charge inside the surface will be
A.
$\left( {{\phi _2} - {\phi _1}} \right){\varepsilon _0}$
B.
$\left( {{\phi _2} + {\phi _1}} \right)/{\varepsilon _0}$
C.
$\left( {{\phi _1} - {\phi _2}} \right)/{\varepsilon _0}$
D.
$\left( {{\phi _1} + {\phi _2}} \right){\varepsilon _0}$
2002
Q452
JEE Mains
MCQ
10 Mar 2026
If a charge $q$ is placed at the center of the line joining two equal charges $Q$ such that the system is in equilibrium then the value of $q$ is
A.
$Q/2$
B.
$ - Q/2$
C.
$Q/4$
D.
$ - Q/4$
2002
Q453
JEE Mains
MCQ
10 Mar 2026
A charged particle $q$ is placed at the centre $O$ of cube of length $L(ABCDEFGH).$ Another same charge $q$ is placed at a distance $L$ from $O$. Then the electric flux through $ABCD$ is
A.
$q/4\,\pi \,{ \in _0}L$
B.
zero
C.
$q/2\,\pi \,{ \in _0}L$
D.
$q/3\,\pi \,{ \in _0}L$
2002
Q454
JEE Mains
MCQ
10 Mar 2026
On moving a charge of $20$ coulomb by $2$ $cm,$ $2$ $J$ of work is done, then the potential differences between the points is
A.
$0.1$ $V$
B.
$8$ $V$
C.
$2V$
D.
$0.5$ $V.$