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. | \(1\) A | 2. | \(0.5\) A |
3. | \(2.5\) A | 4. | \(3\) 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 |