question_answer

The resistances of the four arms P, Q, R and S in a Wheat stone's bridge are \[10\,\,\Omega ,\,30\,\,\Omega ,30\,\,\Omega \] and \[90\,\,\Omega ,\] respectively. The emf and internal resistance of the cell are 7 V and \[5\,\,\Omega \] respectively. If the galvanometer resistance is \[50\,\,\Omega ,\] the current drawn from the cell will be                 [NEET 2013]

A)  1.0 A  

B)       0.2 A

C)  0.1 A  

D)       2.0 A