Chapter 2
88 Maths Exercise Solutions
Calculate the potential at a point 
due to a charge of 
located 
away.
due to a charge of located away.Calculate the potential at a point due to a charge of located 
away. Hence obtain the work done in bringing a charge of 
from infinity to the point . Does the answer depend on the path along which the charge is brought?
due to a charge of located away. Hence obtain the work done in bringing a charge of from infinity to the point . Does the answer depend on the path along which the charge is brought?Two charges 
and 
are located 
apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
and are located apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero. Figures 
and 
show the field lines of a positive and negative point charge respectively.
Give the signs of the potential difference
and 
and show the field lines of a positive and negative point charge respectively.Give the signs of the potential difference
and Figures and show the field lines of a positive and negative point charge respectively.
Give the sign of the potential energy difference of a small negative charge between the points
and 
and 
and show the field lines of a positive and negative point charge respectively.Give the sign of the potential energy difference of a small negative charge between the points
and and Figures and show the field lines of a positive and negative point charge respectively.
Give the sign of the work done by the field in moving a small positive charge from to .
and show the field lines of a positive and negative point charge respectively.Give the sign of the work done by the field in moving a small positive charge from
to .Figure shows the field lines of a positive and negative point charge respectively.
Give the sign of the work done by the external agency in moving a small negative charge from to 
.
Give the sign of the work done by the external agency in moving a small negative charge from
to .Figures 
and show the field lines of a positive and negative point charge respectively.
Does the kinetic energy of a small negative charge increase or decrease in going from to ?
and show the field lines of a positive and negative point charge respectively.Does the kinetic energy of a small negative charge increase or decrease in going from
to ?
Four charges are arranged at the corners of a square
of side d. as shown in the figure. Find the work required to put together this arrangement.Four charges are arranged at the corners of a square of side
. as shown in the figure. charge 
is brought to the centre 
of the square, the four charges being held fixed at its corners. How much extra work is needed to do this?
of side. as shown in the figure. charge is brought to the centre of the square, the four charges being held fixed at its corners. How much extra work is needed to do this?Still Have Question?