Two conducting wires of same material, equal length and equal diameter are first connected in series and then in parallel. Compare the equivalent resistance in two cases.
Answers
Answered by
4
Answer:
Explanation:
Since the two wires have same material, length and diameter, they have the same resistance. Let the resistance of each wire be R.
Let applied potential difference be V.
R series =R 1+R2
=R+R=2R
P series=V²/R
=V²/(2R)..........(i)
1/R parallel= 1/R1+/1R2
R parallel=R/2
P parallel=V²/R parallel =2V²/R............(ii)
Dividing (ii) from (i),
P parallel/P series=1/4
HOPE THIS HELPS YOU
Similar questions