Question
Charges +q and –q are placed at points A and B respectively which are a distance
apart, C is the mid-point between A and B. The work done in moving a charge+
along the semicircle CRD is

The correct answer is: 
In Ist case, when charge
is situated at C

Electric potential energy of system

In IInd case, when charge
is moved from C to D.

Electric potential energy of system in that case







Related Questions to study
Consider three concentric shells of metal A, B and C are having radii a, b and c respectively as shown in the figure
Their surface charge densities are
respectively. Calculate the electric potential on the surface of shell A

Consider three concentric shells of metal A, B and C are having radii a, b and c respectively as shown in the figure
Their surface charge densities are
respectively. Calculate the electric potential on the surface of shell A

Work required to set up the four charge configuration (as shown in the figure) is

Work required to set up the four charge configuration (as shown in the figure) is

The points resembling equal potentials are

The points resembling equal potentials are

In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as
then

In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as
then

Three charges
and
are placed at the vertices of an isosceles right angle triangle as in the figure. The net electrostatic potential energy is zero if
is equal to

Three charges
and
are placed at the vertices of an isosceles right angle triangle as in the figure. The net electrostatic potential energy is zero if
is equal to

A hollow conducting sphere is placed in an electric field produced by a point charge placed at P as shown in figure.
be the potentials at points A, B and C respectively. Then

A hollow conducting sphere is placed in an electric field produced by a point charge placed at P as shown in figure.
be the potentials at points A, B and C respectively. Then

The figure shows electric potential V as a function of
. Rank the four regions according to the magnitude of
-component of the electric field E within them, greatest first

The figure shows electric potential V as a function of
. Rank the four regions according to the magnitude of
-component of the electric field E within them, greatest first

The general solution of the equation
is
The general solution of the equation
is
Solution of
is given by
Solution of
is given by
Equation of the curve passing through (3, 9) which satisfies the differential equation
is
Equation of the curve passing through (3, 9) which satisfies the differential equation
is
If
and f(1) = 2, then f(3) =
If
and f(1) = 2, then f(3) =
The degree and order of the differential equation of all tangent lines to the parabola x2 = 4y is:
The degree and order of the differential equation of all tangent lines to the parabola x2 = 4y is:
The differential equation of all non-horizontal lines in a plane is :
The differential equation of all non-horizontal lines in a plane is :
The differential equation of all non-vertical lines in a plane is :
The differential equation of all non-vertical lines in a plane is :
The differential equation of all conics with the coordinate axes, is of order
The differential equation of all conics with the coordinate axes, is of order