In meter bridge experiment for measuring unknown resistance ' $S$ ', the null point is obtained at a distance $30 c m$ from the left side as shown at point $D$ . If $R$ is $5.6 k Ω$ , then the value of unknown resistance ' $S$ ' will be _____ $Ω$ .

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Using balanced wheatstone condition in meter bridge S R ​ = 30 70 ​ Given here, R = 5.6 k Ω . The, 30 S ​ = 70 5.6 × 1 0 3 ​ S = 7 3 ​ × 5.6 × 1 0 3 = 2400Ω

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