1.

The e.m.f. of a cell is E volts and internal resistance is \[r\] ohm. The resistance in external circuit is also\[r\] ohm. The p.d. across the cell will be                     [CPMT 1985; NCERT 1973]

A.                    E/2
B.                                      2E
C.                    4E                                      
D.            E/4
Answer» B.                                      2E


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