For semi conductor to have negative temperature coefficie...
For semi conductor to have negative temperature coefficient of resistance implies that
their resistance decrease with temperature
The resistance increase with temperature
their resistance is constantly changing with temperature
they have electrons and holes at high temperature
Correct answer is A
Temperature coefficient of resistance is given by
| α = | Increase in resistance per oC rise in temp. |
| __resistance at 0oC |
In the circuit diagram above , the ammeter reads a current of 3A when R is 5Ω and 6A when R is...
In which of the following device is the expansion of solid not required? I. Simple pendulum ...
Control in nuclear reactors is effected with boron rods because rhe rods have the ability to ...