In a Wheatstone's bridge, three resistance $P, Q$ and $R$ connected in the three arms and the fourth arm is formed by two resistances ${S_1}$ and ${S_2}$ connected in parallel. The condition for the bridge to be balanced will be

Question

${P \over Q} = {{2R} \over {{S_1} + {S_2}}}$

${P \over Q} = {{R\left( {{S_1} + {S_2}} \right)} \over {{S_1}{S_2}}}$

${P \over Q} = {{R\left( {{S_1} + {S_2}} \right)} \over {2{S_1}{S_2}}}$

${P \over Q} = {R \over {{S_1} + {S_2}}}$

Solution

Please login to view the detailed solution steps...

Go to DASH