An electron is released from rest in a region of space with a non-zero electric field. Which of the following statements in true?
A ball of mass 1 g carrying a charge 10-8 C moves from a point A at potential 600 V to a point B at zero potential. The charge in its K.E. is
Two point charges 4 μC and -2 μC are separated by a distance of 1 m in air. At what point in between the charges and on the line joining the charges, is the electric potential zero?
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.
The elecrtic field at R = 5 m is
When 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 WA and from P to B is WB.
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 600 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 equipotential surfaces, then the potential difference VC - VA 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.
Charge Q is given a displacement in an electric field The work done is