MHT CET 2021 24th September Evening Shift | Electrostatics Question 30 | Physics

Four electric charges $$+\mathrm{q},+\mathrm{q},-\mathrm{q}$$ and $$-\mathrm{q}$$ are placed in order at the corners of a square of side $$2 \mathrm{~L}$$. The electric potential at point midway between the two positive charges is

$$\frac{1}{4 \pi \epsilon_0} \frac{2 \mathrm{q}}{\mathrm{L}}(1-\sqrt{5})$$

zero

$$\frac{1}{4 \pi \epsilon_0} \frac{2 q}{L}\left(1+\frac{1}{\sqrt{5}}\right)$$

$$\frac{1}{4 \pi \epsilon_0} \frac{2 q}{L}\left(1-\frac{1}{\sqrt{5}}\right)$$

MHT CET 2021 24th September Morning Shift

MCQ (Single Correct Answer)

-0

The electric field intensity on the surface of a charged solid sphere of radius '$$r$$' and volume charge dentiy '$$\rho$$' is given by ($$\epsilon_0=$$ permittivity of free space)

zero

$$\frac{\sigma \pi}{3 \epsilon_0}$$

$$\frac{1}{4 \pi \epsilon_0} \frac{\sigma}{r}$$

$$\frac{5 \pi}{6 \epsilon_0}$$

MHT CET 2021 24th September Morning Shift

MCQ (Single Correct Answer)

-0

Let A, B and C be the three points in a uniform electric field $$\text { ( } \overrightarrow{\mathrm{E}})$$ as shown. The electric potential is

MHT CET 2021 24th September Morning Shift Physics - Electrostatics Question 10 English

maximum at point $$\mathrm{C}$$

maximum at point $$\mathrm{A}$$

maximum at point $$\mathrm{B}$$

same at all points $$\mathrm{A}, \mathrm{B}$$ and $$\mathrm{C}$$

MHT CET 2021 23rd September Evening Shift

MCQ (Single Correct Answer)

-0

Two positive ions, each carrying a charge 'q' are separated by a distance 'd'. If 'F' is the force of repulsion between the ions, the number of electrons from each ion will be ($$\varepsilon$$ = charge on $$\varepsilon_k$$ = permittivity of free space)

$$ \sqrt{\frac{4 \pi \varepsilon_0 \mathrm{~d}^2}{\mathrm{e}^2}} $$

$$ \sqrt{\frac{4 \pi \varepsilon_0 \mathrm{Fd}}{\mathrm{e}^2}} $$

$$ \sqrt{\frac{4 \pi \varepsilon_0 F d^2}{\mathrm{e}}} $$

$$ \sqrt{\frac{4 \pi \varepsilon_0 \mathrm{Fd}^2}{\mathrm{e}^2}} $$

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