A: What is the smallest increment on the voltmeter?
B: What is the uncertainty?
Select two answers: one for question A and one for question B.
A: 1 V
B: 5 V
A: 10 V
A: 100 V
B: 0.5 V
B: 50 V
To answer both questions, we need to have some knowledge about the voltmeter.
A: What is the smallest increment on the voltmeter?
To determine the smallest increment on a voltmeter, we need to know the resolution of the voltmeter. The resolution refers to the smallest change in voltage that can be measured by the instrument. It is typically indicated by the smallest interval or division on the voltmeter's scale. A voltmeter with a resolution of 1 V would mean that it can measure changes in voltage that are at least 1 V apart. So, the answer to question A is: 1 V.
B: What is the uncertainty?
The uncertainty in a measurement usually refers to the range or margin of error in the value obtained from the measurement. To determine the uncertainty on a voltmeter, we need to look at the instrument's specifications. The uncertainty is typically expressed as a percentage or a range in terms of the full-scale value of the voltmeter. For example, if the uncertainty is stated as "± 0.5 V," it means that the actual voltage measured could be up to 0.5 V higher or lower than the indicated value. So, the answer to question B is: 0.5 V.