In a slide wire bridge, the balance is obtained at a point 25cm from one end of wire 1m long. The resistance to be tested is connected to that end and a standard resistance of 3.6\(\Omega\) is connected to the other end of the wire. Determine the value of the unknown resistance
- 3.2\(\Omega\)
- 1.4\(\Omega\)
- 3.21\(\Omega\)
-
1.2\(\Omega\)
The correct answer is: D
Explanation
\(\frac{R}{3.6} = \frac{75}{25} = \frac{1}{3}\)
3R = 3.6
R = 1.2\(\Omega\)
There is an explanation video available .