A copper wire of resistance R.This wire is pulled so that its length is doubled. Find the new
the resistance of the wire in terms of its original resistance.
Answers
Answered by
2
Explanation:
ρL/A = 4R 1. So the new resistance is 4 times the original resistance. (ii) Resistivity is independent of the length and area of cross section of the wire and hence it will not change.
Answered by
2
Explanation:
let original resistance be R
Now, resistance is directly proportional to length
so, when length will be doubled resistance will also be doubled.
so,
new resistance is 2R
Similar questions