In a experiment for calibration of voltmeter a standard cell of emf 1.5 V is balanced at 300 cm length of potentiometer wire. The P.D across a resistance in the circuit is balancedat 1.25 m. if a voltmeter is connected across the same resistance it reads 0.65 V. the error in the volt meter is

In a experiment for callibration of voltmeter a standard cell of emf 1.5 V is balanced at 300 cm length of potentiometer wire. The P.D across a resistance in the circuit is balanced at 1.25 m. If a voltmeter is connected across the same resistance it reads 0.65 V. The error in the volt meter is

In an experiment for calibration of voltmeter, standard cell of emf 1.5 V is balanced at 300 cm length of potentiometer wire. The P.D. Across a resistace in the circuit is balanced at 1.25 m. if a voltmeter, it reads 0.65 V. The error I te volt meter is

In the experiment of calibration of voltmeter, a standard cell of emf 11 V is balanced against 440 cm of potentiometer wire. The potentail difference across the ends of a resistance is found to balance aginst 220 cm of the wire. The corresponding reading of the voltmeter is 0.5 V . Find theerror in the reading of voltmeter.

In an experiment of calibartion of voltmeter, a standard cell of emf 1.1 V is balanced against 440 cm of potentiometer wire. The potentilal difference across the ends of a resistance is found to balance against 220 cm of the wire. The corresponding reading of voltmeter is 0.5 volt. Find the error in the reading of voltmeter.

In the given circuit, an ideal voltmeter connected across the 10Omega resistance reads 2V. The internal resistance r, of each cell is:

The emf of a standard cell is 1.5V and is balanced by a length of 300 cm of a potentiometer with 10 m long wire. Find the percentage error in a voltmeter which balances at 350 cm when its reading is 1.8 V.

Shown two ideal voltmeters and an ammeter, which are connected across the various circuit elements. If the voltmeter connected across 9Omega resistance reads 4.5 V, then answer the following problems. The reading of the ammeter is

A voltmeter has a resistance of 50 Omega is connected across a cell of e.m.f. 2V and internal resistance 10 Omega . The reading of voltmeter is

In the circuit shown, reading of the voltmeter connected across 400 Omega resistance is 60 V. If it is connected across 300 Omega resistance then reading in volt will be