The internal resistance of a battery of 100 V is `5 Omega`. When the emf of the battery is measured by a voltmeter `20%` error is found. What is the resistance of the voltmeter?

The internal resistance of a battery of e.m.f. 100 Vis 4 Omega . A voltmeter of resistance 250 Omega is used to measure the e.m.f. of the battery. What should be the minimum value of the voltmeter resistance so that the error in finding the e.m.f. of the battery may not be more than 1 percent?

Electric current is sent through a resistance of 20 Omega from a battery of emf 2V and of negligible internal resistance .During measurements of current with the help of an ammeter , 20% error is incurred.What is the resistance of the ammeter?

A cell of emf 1.4V and internal resistance 2 Omega is connected in series with a resistance of 100 Omega and an ammeter. The resistance of the ammeter is 4/3 Omega .To measure the potential difference between the two ends of the resistance a voltmeter is connected IF the reading of the voltmeter is 1.10V, what will be its error?

A cell of emf 1.4V and internal resistance 2 Omega is connected in series with a resistance of 100 Omega and an ammeter. The resistance of the ammeter is 4/3 Omega .To measure the potential difference between the two ends of the resistance a voltmeter is connected IF the reading of the ammter is 0.02 A.what is the resistance of the voltmeter?

A voltmeter with a resistance of 8000Omega is used to measure the emf of a cell of internal resistance 4Omega . What is the percentage error in the reading of the voltmeter?

A 100 V voltmeter having an internal resistance of 20 k Omega is connected in series with a large resistance R across a 110 V line. What is the magnitude of resistance R if the voltmeter reads 5 V ?

A 100 V voltmeter having an internal resistance of 20 k Omega is connected in series with a large resistance R across a 110 V line. What is the magnitude of resistance R if the voltmeter reads 5 V ?