Question

In a metre bridge, the balancing length from the left end
(standard resistance of one ohm is in the right gap) is found to
be 20 cm. The value of the unknown resistance is
(a) 0.8 ???? (b) 0.5 ????
(c) 0.4 ???? (d) 0.25 ????

Answer 1

Answer:

(d) 0.25

Explanation:

Metre bridge works on the principle of Wheatstone bridge.