A voltmeter connected in series with a resistance R1 to a circuit indicates a voltage V1=198V. When a series resistor R2=2R! is used,the voltmeter indicates a voltage V2=180V.If the resistance of the voltmeter is Rv=900 ohm then,the applied voltage across A and B is
simran kohli , 10 Years ago
Grade 12
1 Answer
rajula vineet reddy
Last Activity: 10 Years ago
the answer is 220v....let V be the applied voltage for the first case the eqn is 198=Rv*V/R1+Rv and fo rthe second case 180=Rv*V/R2+Rv solve the two u get the answer.
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