Home » Ask Physics » A Question from Errors in measurement

A Question from Errors in measurement

An experiment measures quantities a,b and c, and X is
calculated from

if the percentage error in a,b,c are ±1%, ±5%, ±2%  respectively, the percentage error in X will be
a) 7%
b) 5%
c) 1%
d) 9%

 

Answer:

Percentage error = 1x percentage error in a + 2 x percentage error in b + 3 x percentage error in c

= 1×1 +2×5+3×2

=1+10+6

= 17%

SO there could be a misprint in the question posted by you.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Hits so far @ AskPhysics

  • 2,274,296 hits

You may also be interested in

Subscribe to AskPhysics via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 4,339 other subscribers

July 2021
M T W T F S S
 1234
567891011
12131415161718
19202122232425
262728293031  

Learn Self Defence Techniques online

%d bloggers like this: