The resistance of the meter bridge AB is given figure is 4. With a cell of emf ε=0.5 V and rheostat resistance R |
|||

(a) |
0.6 V |
(b) |
0.5 V |

(c) |
0.3 V |
(d) |
0.4 V |

The resistance of the meter bridge AB is given figure is 4. With a cell of emf ε=0.5 V and rheostat resistance R |
|||

(a) |
0.6 V |
(b) |
0.5 V |

(c) |
0.3 V |
(d) |
0.4 V |

1 Answer

127 votes

Potential gradient with R_{h} =2 is ×=L=100cm

Let null point be at cm

Thus =0.5V=……(1)

Now with R_{h} = 6

and at null point

…...(2)

Dividing equation (1) by (2) we get

thus

127 votes

127