An electron is released from rest in a region of space with a nonzero 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 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 xaxis. 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 xdirection. 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^{0} with the xaxis 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 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 Xaxis 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
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