KCET 2024 | Electrostatics Question 4 | Physics

The total electric flux through a closed spherical surface of radius $r$ enclosing an electric dipole of dipole moment $2 a q$ is (Give $\varepsilon_0=$ permittivity of free space)

zero

$\frac{q}{\varepsilon_0}$

$\frac{2 q}{\varepsilon_0}$

$\frac{8 \pi r^2 q}{\varepsilon_0}$

KCET 2024

MCQ (Single Correct Answer)

-0

Under electrostatic conditien of a charged conductor, which among the following statements is true?

The electric field on the suriacie of a charged conductor is $\frac{\sigma}{2 \varepsilon_0}$, where $\sigma$ is the surface charge density.

The electric potential inside a charged conductor is always zero.

Any excess charge resides on the surface of the conductor.

The net electric filed is tangential to the surface of the conductor.

KCET 2024

MCQ (Single Correct Answer)

-0

A cube of side 1 cm contains 100 molecules each having an induced dipole moment of $0.2 \times 10^{-6} \mathrm{C}-\mathrm{m}$ in an external electric field of $4 \mathrm{NC}^{-1}$. The electric susceptibility of the materials is ................ $\mathrm{~C^2N}^{-1} \mathrm{~m}^{-2}$

0.5

0.05

KCET 2023

MCQ (Single Correct Answer)

-0

A positively charged glass rod is brought near uncharged metal sphere, which is mounted on an insulated stand. If the glass rod is removed, the net charge on the metal sphere is

negative charge

zero

$$1.6 \times 10^{-19} \mathrm{C}$$

positive charge

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