In the circuit diagram below the ammeter in 4 ampere .The vakue of R is 50 ohm and voltmeter reading is 175 volt . calculate the voltmeter resistance and current flowing through it
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According to the given circuit diagram voltage drop across the resistance is 20 volts, but the current passing through the resistance won't be 4 amp as the given voltmeter and ammeter are not ideal. Hence some current will also flow through the voltmeter.
therefore, [R=V/i] will give resistance to be greater than 5 ohm as current (i) through the resistance is less than 4 amp
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