Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 65

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A wire of $5 m$ length carries a steady current. If it has an electric field of $0.2 V m^{- 1},$ the potential difference across the wire in volt will be -

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Important Questions on Electrostatics

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 66

An infinite number of charges of equal magnitude

q,

but alternate charge of opposite sign are placed along the

x

-axis at

x = 1, x = 2, x = 4, x = 8,

and so on. The electric potential at the point

x = 0

due to all these charges will be -

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 67

The electric potential inside a uniformly positively charged non conducting solid sphere has the value which

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 69

Two spheres of radii $R$ and $2 R$ are given a source equally positive charged and then connected by a long conducting wire, then the positive charge will

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 70

The potential difference between two isolated spheres of radius

r_{1}

and

r_{2}

is zero. The ratio of their charges

\frac{Q_{1}}{Q_{2}}

will be-

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 71

The potential on the conducting spheres of radii

r_{1}

and

r_{2}

is same, the ratio of their charge densities will be-

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 72

64

charged drops coalesce to form a bigger charged drop. The potential of bigger drop will be ...... times that of smaller drop:

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 73

The electric potential outside a uniformly charged sphere at a distance

' r'

is (

' a'

being the radius of the sphere)-

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Alpha Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise-1>Q 74

A conducting shell of radius

10 cm

is charged with

3.2 \times 10^{- 19} C .

The electric potential at a distance

4 cm

from its centre in volt be -