A potentiometer has 10 wires each of 1 meter length and the total resistance is `20Omega.` Find the resistance to be connected to the driving battery of emf 2 volts to produce a potential drop of `1 mu V `per millimeter.

An inductance of 2 H and resistance of 10 Omega are connected to a battery of 5 V. the time constant of the circuits is:

The resistance of a potentiometer wire of length 10 m is 25 Omega . A resistance box and a 2 volt accumulator are connected in series with it. What resistance should be introduced in the box to have a potential drop of one microvolt per millimetre of the potentiometer wire ?

The potentiometer consists of a wire of length 4 m and resistance of 10Omega . It is connected to a cell of e.m.f. 2 V. The potential difference per unti length of the wire will be

Two resistors are in the ratio 1:4. If these are connected in parallel, their total resistance becomes 20Omega . Find the value of each resistance.

A 5V battery with internal resistance 2Omega and a 2V battery with internal resistance 1Omega are connected to a 10Omega resistor as shown in the figure.

A resistor is connected to a battery of emf 10 V and internal resistance 0.3 Omega. What is the resistance of the resistor to be inserted in the circuit for the circuit current 1.2A?

Find the current drawn from a cell of emf 1V and internal resistance 2/3 Omega connected to the network given adjoint.