n' cells , each of emf 'e' and internal resistance 'r' are connected in a closed circuit so that the positive terminal of a cell is joined to the negative terminal of the next, as shown in figure. Any two points of the circuit are connected by an external resistance R. Find the current in R.

When negative terminal of a cell is connected to the positive terminal of the next cell are said to be in

When negative terminal of a cell is connected to the positive terminal of the next cell are said to be in

Twenty cells each of emf E and internal resistance r are connected in series to form a loop . If polarity of one of the cell is reserved, then terminal potential across this cell is

n identical cells each of emfe and internal resistance r are joined in series so as to form a closed circuit. The P.D. across any one cell is

Assertion: Two identical cells of emf E and internal resistance r are connected to each other in such a manner that the positive terminal of one is connected to the positive terminal of the other. The net emf of its combination will be E. Reason: Effective internal resistance of this combination will be r//2

n identical cells, each of emf E and internal resistance r, are joined in series to form a closed circuit. Find the potential difference across any one cell.

n-identical cells each of emf E and internal resistance r are connected in series. Find the expression for current in the circuit given below

Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, the current in the external circuit is