if a wire stretched by n times and its old resistance is R than what is new resistance ?
Answers
Answered by
1
OLD RESISTANCE IS
R=ρL/A..............(1)
if the wire is stretched n times
then
R'=ρnL/A/n (as length is increased by n time and Area decreased by n times)
R'=ρ( nL * n)/A
R'=ρ( n^2L)A
R=ρL/A..............(1)
if the wire is stretched n times
then
R'=ρnL/A/n (as length is increased by n time and Area decreased by n times)
R'=ρ( nL * n)/A
R'=ρ( n^2L)A
Similar questions