Question

In the given circuit diagram, the value of resistance X in
ohm when the bridge is balanced will be -

(A) 4
(C) 10
(B) 8
(D) 12​

Answer 1

Answer:

The resistance 8Ω and X are in parallel combination and let their equivalent resistance be R.

For wheat-stone bridge to be balanced-

10/4 = 10/ R

⟹R=4Ω

And,

since, they are parallel

⟹1/X=1/4 - 1/8 = 1/8

X= 8 ohm

Answer 2

Answer:

(C) 8

Explanation:

resistance is in single and Parallel