1. | increases by \(1\) V |
2. | decreases by \(1\) V |
3. | increases by \(3\) V |
4. | decreases by \(3\) V |
1. | \(V=2\) volt, positive at A. |
2. | \(V=2\) volt, negative at A. |
3. | \(V=6\) volt, positive at A. |
4. | \(V=6\) volt, negative at A. |
1. | \(1~\text A\) | 2. | \(0.5~\text A\) |
3. | \(2.5~\text A\) | 4. | \(3~\text A\) |
When no current is passed through a conductor,
(a) | the free electrons do not move. |
(b) | the average speed of a free electron over a large period of time is zero. |
(c) | the average velocity of a free electron over a large period of time is zero. |
(d) | the average of the velocities of all the free electrons at an instant is zero. |
Choose the correct option:
1. | (a) only | 2. | (b), (c) |
3. | (c), (d) | 4. | (a), (d) |
As the temperature of a metallic resistor is increased, the product of its resistivity and conductivity:
1. | increases |
2. | decreases |
3. | remains constant |
4. | may increase or decrease |