Physics (AS & A Level) · Oct / Nov 2016 · Paper 11 · Question 4

A voltmeter gives readings that are larger than the true values and has a systematic error that varies with voltage. Which graph shows the calibration curve for the voltmeter?

1. AGraph A: true value/V against meter reading/V, straight line from origin with gradient less than 1
2. BGraph B: true value/V against meter reading/V, straight line from origin with gradient greater than 1
3. CGraph C: true value/V against meter reading/V, curve with decreasing gradient
4. DGraph D: true value/V against meter reading/V, curve with decreasing gradient

As printed in the paper