Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Physics Current, Resistance and Electricity Wheatstone Bridge
The metre bridge shown is in balance position with \(\frac{P}{Q}=\frac{l_{1}}{l_{2}}\). If we now interchange the positions of galvanometer and cell, will the bridge work? If yes, what will be balance condition ?
1
yes, \(\frac{P}{Q}=\frac{l_{2}}{l_{1}}\)
2
yes, \(\frac{P}{Q}=\frac{l_{1}}{l_{2}}\)
3
yes, \(\frac{P}{Q}=\frac{l_{2}−l_{1}}{l_{2}+l_{1}}\)
4
no, no null point