Question

Uncertainty and Errors:

Answer 1

The manufacture of a digital ammeter quotes its uncertainty as +- 1.5% +- 2 digits.
(a) Determine the uncertainty in a constant reading of 2.64A.

(b) The meter is used to measure the current from a d.c. power supply. The current is found to fluctuate randomly between 1.58A and 2.04A. Determine the most likely value of the current, with its uncertainty.

Answer 2

a) Find 1.5% of 2.64
b) Find mean of 1.58, 2.04 and take 1.5% of that.