Q3.3Multiple choice
A resistance R is to be measured using a meter bridge. Student chooses the standard resistance S to be 100Ω. 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?
- (a)He should measure l1 more accurately.
- (b)He should change S to 1000Ω and repeat the experiment.
- (c)He should change S to 3Ω and repeat the experiment.
- (d)He should give up hope of a more accurate measurement with a meter bridge.