1
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three point charges $+Q,+2 Q$ and $q$ are placed at the vertices of an equilateral triangle. The value of charge $q$ in terms of $Q$, so that electrical potential energy of the system is zero, is given by

A
$\mathrm{q}=\frac{1}{3} \mathrm{Q}$
B
$\mathrm{q}=\frac{2}{3} \mathrm{Q}$
C
$\mathrm{q}=-\frac{2}{3} \mathrm{Q}$
D
$\mathrm{q}=-\frac{3}{2} \mathrm{Q}$
2
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

A hollow cylinder has a charge of ' $q$ ' $C$ within it. If $\phi$ is the electric flux associated with the curved surface B, the flux linked with the plane surface A will be

MHT CET 2025 20th April Morning Shift Physics - Electrostatics Question 1 English

A
$\frac{\phi}{3}$
B
$\frac{\mathrm{q}}{\varepsilon_0}-\phi$
C
$\frac{\mathrm{q}}{3 \varepsilon_0}$
D
$\quad \frac{1}{2}\left(\frac{\mathrm{q}}{\varepsilon_0}-\phi\right)$
3
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

A conducting sphere of radius ' R ' is given a charge ' $Q$ ' uniformly. The electric field and the electric potential at the centre of the sphere are respectively [ $\varepsilon_0=$ permittivity of free space]

A
zero and $\frac{Q}{4 \pi \varepsilon_0 R}$
B
$\frac{\mathrm{Q}}{4 \pi \varepsilon_0 \mathrm{R}^2}$ and zero
C
$\frac{\mathrm{Q}}{4 \pi \varepsilon_0 \mathrm{R}}$ and $\frac{\mathrm{Q}}{4 \pi \varepsilon_0 \mathrm{R}^2}$
D
zero and zero
4
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

' n ' small spherical drops of same size which are charged to ' $V$ ' volt each coalesce to form a single big drop. The potential of the big drop is

A
$\frac{V}{n}$
B
$n \cdot V$
C
$n^{1 / 3} \cdot V$
D
$\mathrm{n}^{2 / 3} \cdot \mathrm{~V}$
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