PhysicsEasy226×since 2002Q6526In a Wheatstone's bridge, three resistance P,QP, QP,Q and RRR connected in the three arms and the fourth arm is formed by two resistances S1{S_1}S1 and S2{S_2}S2 connected in parallel. The condition for the bridge to be balanced will beAPQ=2RS1+S2{P \over Q} = {{2R} \over {{S_1} + {S_2}}}QP=S1+S22RBPQ=R(S1+S2)S1S2{P \over Q} = {{R\left( {{S_1} + {S_2}} \right)} \over {{S_1}{S_2}}}QP=S1S2R(S1+S2)CPQ=R(S1+S2)2S1S2{P \over Q} = {{R\left( {{S_1} + {S_2}} \right)} \over {2{S_1}{S_2}}}QP=2S1S2R(S1+S2)DPQ=RS1+S2{P \over Q} = {R \over {{S_1} + {S_2}}}QP=S1+S2RCheck answerSkip