The voltage across a device is measured as with an uncertainty of

PHYSICS · Single correct · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

The voltage across a device is measured as

100.0\,\text{V}

with an uncertainty of

\pm 1.0\,\text{V}

, and the current is

2.00\,\text{A}

with an uncertainty of

\pm 0.02\,\text{A}

. What is the percentage uncertainty in the calculated electrical power? (a)

1\%

(b)

1.4\%

(c)

2\%

(d)

3\%