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A balanced bridge has P = 10 ohm, Q = 20 ohm, R = 30 ohm with P/Q = R/S. What is S?
A15 ohm
B20 ohm
C60 ohm
D5 ohm
Answer & Solution
Correct answer: C. 60 ohm
From P/Q = R/S, S = R Q / P = 30 x 20 / 10 = 60 ohm.
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