When a resistance of 2 ohm is connected across terminals of a cell, the current is `0.5 A`. When the resistance is increased to 5 ohm, the current is `0.25 A` The e.m.f. of the cell is

When a resistance of 2 Omega is connected across the terminals of a cell, the current is 0.5 A. When resistance is increased to 5 Omega , the current is 0.25 A. the emf of the cell is

When a resistance of 2 Ohm is connected across the terminals of a cell, the current is 0.5 A. If a resistance of 5 Ohm is connected across the cell then the current is 0.25 At the emf of the cell is:

When a resistance of 2 ohm is placed across a battery the current is 1 A and when the resistance across the terminals is 17 ohm, the current is 0.25A. The emf of the battery is

When a resistance of 12 Omega is connected with a cell of emf 1.5 V, 0.1A current flows through the resistance. Internal resistance of the cell is—

The current flowing through an external resistance of 2 Omega is 0.5 A when it is connected to the terminals of a cell. This current reduces to 0.25 A when the external resistance is 5 Omega .Use Kirchhoff's laws to find e.m.f. of cell

A battery of emf 10V and internal resistance 3 ohm is connected to a resistor. If the current in the circuit is 0.5A, what is the resistance of resistance of resistor ? What is the terminal voltage of the battery when the circuit is closed?

Three wires are connected in series having resistances 2 , 3 and 5 ohms respectively. A steady current is passed through them by a battery of negligible internal resistance and e.m.f of 4volt. When a cell is connected across 3 ohm resistance, the current distribution in the circuit remains unchanged then e.m.f of the cell is