Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 34

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Identify the wrong statement in the following: Coulomb's law correctly describes the electric force that-

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Important Questions on Electrostatics

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 35

Two charges

9 e

and

3 e

are placed at a separation

r

. The distance of the point where the electric field intensity will be zero is:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 36

A ring of radius

R

is charged uniformly with a charge

+ Q

. The electric field at a point on its axis at a distance

r

from any point on the ring will be:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 37

Two positive charges of

1 μC

and

2 μC

are placed

1 m

apart. The value of the electric field in

N C^{- 1}

at the mid-point of the two charges will be:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 38

The electric field in a certain region is given by

\vec{E} = (\frac{K}{x^{3}}) \hat{1}

. The dimensions of

K

are

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 39

Figure below shows regular hexagon, with different charges placed at the vertices. In which of the following cases is the electric field at the centre zero?

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 40

Electric field at the centre ' $O$ ' of a semicircle of radius ' $a$ ' having linear charge density $λ$ , is given as:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 41

Semicircular ring of radius

0.5 m

is uniformly charged with a total charge of

1.5 \times 10^{- 9} C

. The electric potential at the centre of this ring is:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 42

For the given figure the direction of electric field at A will be:

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