In the circuit shown in Fig. 4.25, the voltmeter reads 1.5 V, when the key is open. When the key is closed, the voltmeter reads 1.35 V and ammeter reads 1.5 A. Find the emf and the internal resistance of the cell.

Shown an arrangement to measure the emf (epsilon) and internal resistance r of a battery. The voltmeter has a very high resistance and the ammeter also has some resistance.The voltmeter reads 1.52 V when the switch S is open.When the switch is closed the voltmeter reading drops to 1.45 V and the ammeter read 1.0A Find the emf and the internal resistance of the battery.

If the voltmeter reads 0.2 V and the ammeter reads 0.101A, the resistance of the voltmeter is (in ohm)

In the circuit shown below. The reading of the voltmeter V is

In the circuit shown in Fig. 6.50 , an idel ammeter and an ideal voltmeter are used. Whan the key is open, the voltmeter reads 1.53 V . When the key is closed, the ammeter reads 1.0 A and the voltmeter reads 1.03 V . The resistance R is

In the circuit figure, the voltmeter reads 30 V. The resistance of the voltmeter is

In the given figure when the key is open the ammeter reading is 5 amp. What will be the ammeter reading when the key is closed

If resistance of voltmeter is 10000 Omega and resistance of ammeter is 2Omega then find R when voltmeter reads 12 V and ammeter reads 0.1 A

In the circuit shown below, the ammeter A reads 5 A and the voltmeter V reads 20 V The correct value of resistance R is

In the circuit shows in Fig. 6.22 , a voltmeter reads 30 V when it is connected across a 400 omega resistance. Calculate what the same voltmeter would read when it is connected across the 300 Omega resistance.