You measure a quantity, say A, and it has a 1% uncertainty.

Question

If you calculate the value of 100A, its uncertainty will be

a. 100%

b. 10%

c. 1%

d. Need more information since it depends on what A is.

Answer 1

c. The relative uncertaibty remains the same when you multiply by a constant.

Answer 2

its just a simple ratio problem

solution:

100A X
A 0.01

THEN THE EQUATION WILL BE

100A/A=X/0.01