A standerd cell emf 1.08 V is balance by the potential difference across 91 cm of a meter long wire applied by a cell of emf 2 V through a series resistor of resistance `2 Omega. `The internal resistance of the cell is zero. Find the resistance per unit length of the potentiometer wire.

For a Cell, the terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V, when cell is connected to a resistance R = 5Omega . The internal resistance of cell (r ) is

The internal resistance of a cell of e.m.f. 2 V is 0.1 Omega . It is connected to a resistance of 3.9Omega . The voltage across the cell will be

The internal resistance of a cell of e.m.f. 2 V is 0.1 Omega . It is connected to a resistance of 3.9Omega . The voltage across the cell will be

When a balance point is obtained in a potentiometer for finding the internal resistance of a cell, the current through the potentiometer wire is due to

The potential difference across the terminals of a battery is 50 V when 11 A is drawn and 60V when 1A is drawn . The emf and the internal resistance of the battery are

A cell of emf 2 V and internal resistance 0.1Omega is connected to 3.9Omega external resistance. What will be the potential difference across the terminals of the cell?

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?

A cell gives a balance with 85 cm of a potentiometer wire. When the terminals of the cell are shorted through a resistance of 7.5Omega , the balance is obtained at 75 cm. Find the internal resistance of the cell.

A potentiometer wire carries current. The potential difference across 70 cm of its balances the potential difference across a 2 ohm coil supllied by a cell of e.m.f. 2 volt. When a 1 ohm coil is placed in parallel with the 2 ohm coil, a length equal to 50 cm of the potentiometer wire is required to balance the potential difference across the parallel combination. What is the internal resistance of the 2 V cell?