A cell of e.m.f. E is connected with an external resistance R , then p.d. across cell is V . The internal resistance of cell will be

A lead resistance R is connected across a cell of emf E and internal resistance r. If the closed circuit p.d. across the terminals of the cell is V the internal resistance of the cell is.

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be ......

Two cells of the same e.mf. e but different internal resistances r_(1) and r_(2) are connected in series with an external resistance 'R'. The potential drop across the first cell is found to be zero. The external resistance Ris

Two cells of the same e.mf. e but different internal resistances r_(1) and r_(2) are connected in series with an external resistance 'R'. The potential drop across the first cell is found to be zero. The external resistance Ris