Two students perform a Wheatstone bridge experiment to find an unknown resistance R. The first student chooses bridge arm resistances R2 = 10Ω and R1 = 5Ω. The second student chooses R2 = 1000Ω and R1 = 500Ω. Both use R3 = 5Ω in the standard arm and get R = 10Ω. Which of the following statements is true regarding their measurements?

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Physics · Current Electricity

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

The second student's large resistances make the currents through the bridge arms feeble, making accurate null point determination more difficult.

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Answer 1

The first student's measurement is less accurate due to overheating of the circuit components.

Answer 2

The second student's large resistances make the currents through the bridge arms feeble, making accurate null point determination more difficult.

Answer 3

Wheatstone bridge is an ideal instrument and has no operational errors of measurement.

Answer 4

The errors of measurement of both students are identical.

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