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
A.
3.2\(\Omega\)
B.
1.4\(\Omega\)
C.
3.21\(\Omega\)
D.
1.2\(\Omega\)
Correct answer is D
\(\frac{R}{3.6} = \frac{75}{25} = \frac{1}{3}\)
3R = 3.6
R = 1.2\(\Omega\)