Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 66

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Figure shows three points $A, B$ and $C$ in a region of uniform electric Field $\vec{E}$ . The line $A B$ is perpendicular and $B C$ is parallel to the field lines. Then which of the following hold good? ( $V_{A}, V_{B}$ and $V_{C}$ represent the electric potential at points $A, B$ and $C$ respectively )

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Important Questions on Electrostatics

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 67

Two metal plates are separated by

2 cm .

The potentials of the plates are

- 10 V

and

+ 30 V

. The electric field between the two plates is:

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 68

Four equal charges

Q

are placed at the four corners of a square of each side

a

. Work done in removing a charge

- Q

from its centre to infinity is

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 69

A solid conducting sphere, having a charge

Q,

is surrounded by an uncharged conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be

V .

If the shell is now given a charge of

- 4 Q,

the new potential difference between the same two surfaces is:

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 70

A charge Q is distributed over two concentric conducting thin spherical shells radii $r$ and $R (R > r)$ . If the surface charge densities on the two shells are equal, the electric potential at the common centre is :

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 71

N

number of charges,

+ Q

each, are placed maintaining equal distance on the circumference of a circle of radius

R .

The net electrostatic potential at the centre of the circle is

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 72

The potential at the centre of a hollow, charged metal sphere of radius

5 cm

, so that the potential on its surface

10 V

, is

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 73

Two concentric spherical conducting shells of radii

R

and

\cdot 2 R

carry charges

Q

and

2 Q

respectively. Change in electric potential on the outer shell when both are connected by a conducting wire is

(K = \frac{1}{4 π ε_{0}})

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 74

n

small metal drops of same size are charged to

V

volt each. If they coalesce to form a single large drop, then its potential will be