question_answer

The e.m.f. of a standard cell balances across 150 cm length of a wire of potentiometer. When a resistance of \[2\,\Omega \] is connected as a shunt with the cell, the balance point is obtained at \[100\,cm\]. The internal resistance of the cell is                                                                                            [MP PET 1993]

A)                                                      \[0.1\,\Omega \]                

B)            \[1\,\Omega \]

C)                    \[2\,\Omega \]

D)                                      \[0.5\,\Omega \]