Electric Potential MCQ (With Solution) : Test 1 - Class 12 MCQ

Three charges 2q, -q and -q are located at the vertices of  an equilateral triangle. At the centre of the triangle

The veriation of potential with distance R from fixed point is shown in Fig.

Q. The elecrtic field at R = 5 m is

W hen a 2 µC of charge is carried from point A to point B. the amount of work done by electric field is 50 µJ.What is the potential difference and which point is at a higher potential?

The work done in taking a unit positive charge from P to A is W_A and from P to B is. W_B.

Then

Four charges +q, -q, +q and -q are put together at four corners of a square as shown in Fig. The work done by external agent in assembling this configuration is

The electric field in a region surrounding the origin is uniform and along the x-axis. A small circle is drawn with the centre at the origin cutting the axes at points A, B, C and D having coordinates (a,0), (0,a), (-a,0) and (0,-a), respectively, as shown in Fig. Then, the potential is minimum at

Mark the correct statement.

Variation in potential is maximum if one goes

There is an electric field E in the x-direction. If the work done by electric field in moving a charge of 0.2 C through a distance of 2 m along a line making an angle 60^° with the x-axis is 4 J, then what is the value of E?

Some equipotential surfaces are shown in Fig. The magnitude and direction of the electric field is

In moving from A to B along an electric field line, the work done by the electric field on an electron is 6.4 × 10^-19 J. If are equipotential surfaces, then the potential difference V_C - V_A is

An electron is taken from point A to point B along the path AB in a uniform electric field of intensity E = 10 Vm^-1, Side AB = 5 m and side BC = 3 m. Then, the amount of work done on electron by us is

Two identical rings P and Q of radius 0.1 m are mounted coaxially at a distance 0.5 m apart. The charges on the two rings are 2 and 4 µC, respectively. The work done in transferring a charge of 5 µC from the centre of P to that of Q is

At a point in space, the electric field points towards north. In the region surrounding this point, the rate of change of potential will be zero along

Charges -q, Q and -q are placed at an equal distance on straight line. If the total potential energy of the system of three charges is zero, then find the ratio Q/q.

Four identical charges are placed at the point (1, 0, 0), (0, 1 ,0), (-1, 0, 0) and (0, -1, 0). Then,

When the separation between two charges is increased, the electric potential energy of the charges

A positive charge is moved from a low potential point A to a high potential point B. Then the electric potential energy of the system

If a charge is moved against the coulomb force of an electric field, then the

Mark the correct statement:

The electric potential decreases uniformly from 120 V to 80 V as one moves on the X-axis from x = -1 cm to x = +1 cm. The electric field at the origin.