## 36. A dielectric material is:

## 37. A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?

## 38. If a load resistance is 1 kW, a stiff current source has a resistance of

## 39. A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?

## 40. The number of free electrons and holes in intrinsic semiconductor increases when the temperature

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