In Wheatstone bridge, three resistors P,Q and R are conncected in three arms

In Wheatstone bridge, three resistors P,Q and R are conncected in three arms in order and 4th arm of resistance s, is formed by two resistors s₁ and s₂ connected in parallel. The condition for bridge to be balanced is, P/Q

Options

(a) R(s₁+s₂)/s₁s₂
(b) s₁s₂/R(s₁+s₂)
(c) R(s₁s₂)/(s₁+s₂)
(d) (s₁+s₂)R(s₁s₂)

Correct Answer:

R(s₁+s₂)/s₁s₂

Explanation:

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