N identical calls are cannected to from a battery. When the terminals of the battery are joined directly. When the terminals of the battery are joined directly (short - ciruited), current I flows in the circuit. To obtain the maximum value of I,

Options

A. all the cells should be joined in series
B. all the cells should be joined in parallel
C. two rows fo N //2 cells each should be joined in parallel
D. `sqrtN` rows of `sqrtN` cells each should be joined in parlallel, given that `sqrtN` is an interger

Answer

B

Explanation

For series connection , `I_(min) = (N epsilon)/(Nr) = (epsilon)/(r )`
For parallel connection, `i_(max) = (epsilon)/(r//N)= (N epsilon)/(r )`