MHT CET 2020 16th October Morning Shift | Electrostatics Question 128 | Physics

Surface density of charge on a charged conducting sphere of radius $$R$$ in terms of electric field intensity $$E$$ at a distance $$r$$ in free space is ($$r>R, \varepsilon_0=$$ permittivity of free space)

$$\varepsilon_0 E\left(\frac{R}{r}\right)^2$$

$$\varepsilon_0 E \frac{R}{r}$$

$$\varepsilon_0 E\left(\frac{r}{R}\right)^2$$

$$\varepsilon_0 E \frac{r}{R}$$

MHT CET 2019 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

In case of dimensions of electric field and electric dipole moment the power of mass is reswpectively,

1, 1

1, 0

0, 1

0, 0

MHT CET 2019 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

A charged conductor produces an electric field of intensity $10^3 \mathrm{~V} / \mathrm{m}$ just outside its surface in vacuum. Then, it produces the electric field of intensity E just outside its surface, when it is placed in a medium of dielectric constant 4. The value of $E$ will be

$400 \mathrm{~V} / \mathrm{m}$

$450 \mathrm{~V} / \mathrm{m}$

$250 \mathrm{~V} / \mathrm{m}$

$150 \mathrm{~V} / \mathrm{m}$

MHT CET 2019 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

Which of the following is the dimensional formula for electric polarisation?

$\left[M^P L^{-2} T^1 I^1\right]$

$\left[M^{-1} L^{-2} T^1 I^{-1}\right]$

$\left[M^P L^{-1} T^{-1} I^1\right]$

$\left[M^1 L^{-2} T^1 I^1\right]$

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