Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 1

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Three isolated equal charges are placed at the three corners of an equilateral triangle as shown in figure. The statement which is true for net electric potential $V$ and net electric field intensity $E$ at the centre of the triangle is

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Important Questions on Electrostatic Potential and Capacitance

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 2

The potential at a point

0.1 m

from an isolated point charge is

+ 100 Volts

. The nature of the point charge is

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 3

A charge of

10 μ C

is placed at the origin of

x - y

coordinate system. The potential difference between two points

(0, a)

and

(a, 0)

in

volt

will be

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 4

Four charges of same magnitude

q

are placed at four corners of a square of side

a .

The value of electric potential at the centre of the square will be (where

k = \frac{1}{4 π ε_{0}})

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 5

Two identical positive charges are placed on the

y

-axis at

y = - a

and

y = + a

. The variation of

V

(electric potential) along

x

-axis is shown by graph

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 6

Which graph best represents the variation of electric potential as a function of distance from the centre of a uniformly charged solid sphere of charge of radius

R

?

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 7

When a test charge is brought from infinity along the perpendicular bisector of an electric dipole, then the work done is :

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 8

The electric potential at a distance of

3 m

on the axis of a short dipole of dipole moment

4 \times 10^{- 12} coulomb - metre

is

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Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 9

The electric potential in volts due to an electric dipole of dipole moment

2 \times 10^{- 8}

coulomb-metre at a distance of

3 m

on a line making an angle of

60 °

with the axis of the dipole is