Acell of internal resistance `r` drives a current through an external resistance `R`. The power delivered by the cell to the external resistance is maximum when

A cell of internal resistance r drivers current through an external resistance R. The power delivered by the to the external resistance will be maximum when:

A cell of emf E and internal resistance r drives a current of 5 Ampere through an extenal resistance of 8 ohm. The current drops to 4 Ampere when the external resistance is increased to 10.1 ohm. Find the emf E and the internal resistance r of the cell.

A cell of emf E and internal resistance ® is connected across an external resistance, R. The cell shall drive maximum current through the external resistance R only if

A cell of internal resistance "r" is connected to an external resistance "R". p.d. will be maximum across "R" if

If a cell is flowing current through external resistance then curve between terminal potential (V) and external resistance R is:

The internal resistance of a cell of emf E is r, and external resistance is R. What is the potential about the external Resistance

A cell of emf epsilon and internal resistance r gives a current of 0.5 A with an external resistance of 12 Omega and a current of 0.25 A with an external resistance of 25 Omega . Calculate (a) internal resistance of the cell and (b) emf of the cell.