From the circuit the reading of a volt meter is 18 volts. What is the resistance of the volt meter?

How will you convert galvanometer which needs 50 mA for full scale deflection into a voltmeter reading upto 2.5 volts ? The resistance of the galvanometer is 10 ohms.

What is the principle of a meter bridge.

Two rails of a railway track insulated from each other and the ground are connected to a milli voltmeter. What is the reading of millivoltmeter when the train travels at speed of 180 km/h along the track, given that the horizontal component of earth's magnetic field is 0.2*10^(-4) wb/m and the rails are separated by 1 meter.

From the circuit calculate the resistance between A and B.

What are dimensions of volt?

Define one electon volt.

Electron volt is the unit of

Twenty seven identical drops of mercury are charged to the same potential 10 volts. What will be the potential, if all the drops are combined to form one large drop ?

A galvanometer has an internal resistance of 1.0 ohm. It gives maximum deflection for current of 50 mA. Show how it can be converted into (i) a voltmeter with a maximum reading a of 2.5 volts, (ii) an ammeter with a maximum reading of 2.5 A.