Current Electricity and Electrical InstrumentHard

Question

In the circuit shown the readings of ammeter and voltmeter are 4A and 20V respectively. The meters are non-ideal, then R is

Options

A.5Ω
B.less then 5Ω
C.greater then 5Ω
D.between 4Ω and 5Ω

Solution


(4 − I) R = IRV = 20     (4 − I) R = 20
4 − I is less than 4
So that, R is greater than 5Ω

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