In a potentiometer experiment two cells of e.m.f.’ s and are used in series and in conjunction and the balancing length is found to be of the wire. If the polarity of is reversed, then the balancing length becomes The ratio of the e.m.f. of the two cells is |
|||||||

a) |
1 : 1 |
b) |
2 : 1 |
c) |
3 : 1 |
d) |
4 : 1 |

In a potentiometer experiment two cells of e.m.f.’ s and are used in series and in conjunction and the balancing length is found to be of the wire. If the polarity of is reversed, then the balancing length becomes The ratio of the e.m.f. of the two cells is |
|||||||

a) |
1 : 1 |
b) |
2 : 1 |
c) |
3 : 1 |
d) |
4 : 1 |

127