Question

in a metre bridge experiment shown below the null point is obtained at p the value of unknown resistance X is
(1) 20 ohm
(2) 10 ohm
(3) 40 ohm
(4) 30 ohm​

Answer 1

Answer:

$\frac{20}{50} = \frac{x}{2 \times 50} \\ x \: = 40 \:ohm$

3rd is the correct answer

Explanation:

hope the answer will help you