Question:
Should the resistance of an ammeter be low or high ? Give reason.
Solution:
Ammeter is connected in series in an electric circuit to measure electric current. If its resistance is high, then the net resistance of the electric circuit
will increase and hence current in the electric circuit will decrease. Hence, ammeter will not read the actual value of the current in the circuit. If
resistance of the ammeter is low, then the net resistance of the circuit will not be effected much. Hence, the current in the circuit is not affected. Ideal ammeter has zero resistance.