56.
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

58.
It can be stated that

59.
To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken