Question

Derive an expression for the equivalent resistances of three resistances connected in series

Answer 1

if the resistance value R1
R2
R3

equivalent resistance=R1+R2+R3
since it is in series...

Answer 2

Explanation:

Answer. (i) Total potential difference across a combination of resistors in series is equal to the sum of potential difference across the individual resistors. Hence , a fuse of rating 5A can be used because it can bear the current