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How many resistances are used in a Wheatstone bridge?

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in Physics – Class 12 by (135k points)
How many resistances are used in a Wheatstone bridge?

(a) 3

(b) 4

(c) 5

(d) 6

I had been asked this question in an online quiz.

The doubt is from Wheatstone Bridge in portion Current Electricity of Physics – Class 12

1 Answer

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Best answer
Right choice is (b) 4

The best explanation: Wheatstone bridge is an arrangement of four resistors P, Q, R, and S, such that if we know the value of the resistances of any three of them, we can obtain the value of fourth unknown resistance. Therefore, there are 4 resistances in a Wheatstone bridge.

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