Current Electricity and Electrical InstrumentHard
Question
An ammeter and a voltmeter are joined in series to a cell. Their readings are A and V respectively. If a resistance is now joined in parallel with the voltmeter,
Options
A.both A and V will increase
B.both A and V will decrease
C.A will decrease, V will increase
D.A will increase, V will decrease
Solution
Equaivalent resistance decrease so current will increases.
VA + VV = V
Due to change, VA increases so voltmeter reading will decrease.
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