MHT CET 2025 20th April Morning Shift | Electrostatics Question 22 | Physics

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 21 English

$\frac{\phi}{3}$

$\frac{\mathrm{q}}{\varepsilon_0}-\phi$

$\frac{\mathrm{q}}{3 \varepsilon_0}$

$\quad \frac{1}{2}\left(\frac{\mathrm{q}}{\varepsilon_0}-\phi\right)$

MHT CET 2025 20th April Morning Shift

MCQ (Single Correct Answer)

-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]

zero and $\frac{Q}{4 \pi \varepsilon_0 R}$

$\frac{\mathrm{Q}}{4 \pi \varepsilon_0 \mathrm{R}^2}$ and zero

$\frac{\mathrm{Q}}{4 \pi \varepsilon_0 \mathrm{R}}$ and $\frac{\mathrm{Q}}{4 \pi \varepsilon_0 \mathrm{R}^2}$

zero and zero

MHT CET 2025 20th April Morning Shift

MCQ (Single Correct Answer)

-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

$\frac{V}{n}$

$n \cdot V$

$n^{1 / 3} \cdot V$

$\mathrm{n}^{2 / 3} \cdot \mathrm{~V}$

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

The electric potential ' V ' is given as a function of distance ' $x$ ' (metre) by $V=\left(4 x^2+8 x-3\right) V$. The value of electric field at $x=0.5 \mathrm{~m}$, in $\mathrm{V} / \mathrm{m}$ is

-16

-12

+12

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