Two voltmeters have the same range 0-400 V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600 V be applied across them, the readings are
Two voltmeters have the same range 0-400 V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600 V be applied across them, the readings are
1). 360 V and 240 V
2). 300 V each
3). 400 V and 200 V
4). one of the meters out of the range and other 100 V
1 answers
By applying voltage division rule,
Voltage across first voltmeter $({V_1} = 600 \times \left( {\frac{{30000}}{{50000}}} \right) = 360\;V)$
Voltage across first voltmeter $({V_1} = 600 \times \left( {\frac{{20000}}{{50000}}} \right) = 240\;V)$
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