
In the circuits shown below, the readings of the voltmeters and the ammeters will be,

- and
- and
- and
- and
Solution
For an ideal voltmeter, resistance is infinite , so it will not draw any amount of current from the circuit and for ideal ammeter resistance is zero.
Then for the first figure and both are in a parallel arrangement, so
and current in the first circuit is,
So, for the first circuit, ammeter and voltmeter readings are , respectively.
For the second figure voltmeter and resistant of are in series and also connected parallel to another resistant of . So, equivalent resistant is
Current in the circuit is, ,
Ammeter and voltmeter readings for the second circuit is
For both the circuit is
Asked in: NEET 2019 (All India)