\(A,B\) and \(C\) are three points in a uniform electric field. The electric potential is:
1. | maximum at \(A\) |
2. | maximum at \(B\) |
3. | maximum at \(C\) |
4. | same at all the three points \(A,B\) and \(C\) |
1. | \(8\) along the negative \(X\text-\)axis |
2. | \(8\) along the positive \(X\text-\)axis |
3. | \(16\) along the negative \(X\text-\)axis |
4. | \(16\) along the positive \(X\text-\)axis |
In a certain region of space with volume \(0.2\) m3, the electric potential is found to be \(5\) V throughout. The magnitude of electric field in this region is:
1. \(0.5\) N/C
2. \(1\) N/C
3. \(5\) N/C
4. zero
The electric potential at a point in free space due to a charge \(Q\) coulomb is \(Q\times10^{11}~\text{V}\). The electric field at that point is:
1. \(4\pi \varepsilon_0 Q\times 10^{22}~\text{V/m}\)
2. \(12\pi \varepsilon_0 Q\times 10^{20}~\text{V/m}\)
3. \(4\pi \varepsilon_0 Q\times 10^{20}~\text{V/m}\)
4. \(12\pi \varepsilon_0 Q\times 10^{22}~\text{V/m}\)
1. | If \(E\neq0,V\) cannot be zero |
2. | If \(V\neq0, E\) cannot be zero |
3. | If \(V\) is constant and non-zero, \(E\) must be zero |
4. | If \(V=0,E\) must be zero |
The figure shows some of the equipotential surfaces. Magnitude and direction of the electric field is given by:
1. | \(200\) V/m, making an angle \(120^\circ\) with the \(x\text-\)axis |
2. | \(100\) V/m, pointing towards the negative \(x\text-\)axis |
3. | \(200\) V/m, making an angle \(60^\circ\) with the \(x\text-\)axis |
4. | \(100\) V/m, making an angle \(30^\circ\) with the \(x\text-\)axis |
When a negative charge is released and moves in the electric field, it moves towards a position of:
1. | lower electric potential and lower potential energy. |
2. | lower electric potential and higher potential energy. |
3. | higher electric potential and lower potential energy. |
4. | higher electric potential and higher potential energy. |
a. | the electric field is uniform |
b. | the electric field is zero |
c. | there can be no charge inside the region |
d. | the electric field shall necessarily change if a charge is placed outside the region |
Choose the correct statement(s):
1. (b) and (c)
2. (a) and (c)
3. (b) and (d)
4. (c) and (d)
Work done to carry a negatively charged body in direction of the electric field:
(assuming no other force is acting on the body)
1. | is always negative. | 2. | maybe negative. |
3. | is always positive. | 4. | maybe zero. |
The variation of potential with distance \(x\) from a fixed point is shown in the figure. The electric field at \(x=13\) m is:
1. | \(7.5\) volt/meter | 2. | \(-7.5\) volt/meter |
3. | \(5\) volt/meter | 4. | \(-5\) volt/meter |