When two wires are in the gaps of the meter bridge, the balance point was foun d to be 1/3m from the zero end. When a 6ohm coil is connected in series with the smaller of the the two ressistance, the balancing point is shifted to 2/3m from the same end. Find the resistance of the wires?
We know for meter bridge
Assume R < S,
For R and S, l1 = 1/3m
Then,
.................(i)
Now a 6 ohm resistor is in series with R, then l1 = 2/3m
Then,