nursing AIIMS BSc Nursing 2025 Mock Test Series Physics Current, Resistance and Electricity Meter Bridge
A resistance R is to be measured using a meter bridge. Student chooses the standard resistance S to be 100 Ω. He finds the null point at l1 = 2.9 cm. He is told to attempt to improve the accuracy. Which of the following is a useful way?
1
He should measure l1 more accurately.
2
He should change S to 1000 Ω and repeat the experiment.
3
He should change S to 3 Ω and repeat the experiment.
4
He should give up hope of a more accurate measurement with a meter bridge.