A cell has an emf 1.5V. When connected across an external resistance of `2Omega`, the terminal potential difference falls to 1.0V. The internal resistance of the cell is:

A cell which has an emf 1.5 V is connectedin series with an external resistance of 10Omega . If the potential difference across the cell is 1.25 V, then the internal resistance of the cell is ("in" Omega)

A cell which has an emf 1.5 V is connection series with an external resistance of 10Omega . If the potential difference across the cell is 1.25 V, then the internal resistance of the cell is ("in" Omega)

The potential difference between the terminals of a cell in open circuit is 2.2 V. With resistance of 5 Omega across the terminals of a cell, the terminal potential difference is 1.8 V. The internal resistance of the cell is

The emf of a daniel cell is 1.08 V. When the terminals of the cells are connected to a ressitance of 3Omega , the potential difference across the terminals is found to be 0.6 V. Then the internal resistance of the cell is

A cell of emf E is connected across a resistance R. The potential difference between the terminals of the cell is found to be V. The internal resistance of the cell must be -