The circuit shown in called a Wheatstone bridge, is used to determine the value

Question

The circuit shown in called a Wheatstone bridge, is used to determine the value of an unknown resistor X by comparison with three resistors M, N, and P whose resistances can be varied For each setting, the resistance of each resistor is precisely known With switches S_1 and S_2 closed, these resistors are varied until the current in the galvanometer G is zero; the bridge is then said to be balanced Under this condition the unknown resistance is given by X = MP/N. If the galvanometer G shows zero deflection when M = 850.0 Ohm.N = 14 00 Ohm, and P = 33.38,what is the unknown resistance X? Express your answer with the appropriate units. X =

Explanation / Answer

X=(850.0x33.38)/14.00 = 2026.6 ohm

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