4ohm wire dubbled then new resistance is ?
Answers
Answered by
1
Resistance= (pl)/a
l=length of wire
a=area of wire
Wire is doubled so length will be doubled.
Let's assume R initial resistance..
R'= new resistance
R'=(2pl)/a
R'=2R
R'=2*4=8 ohm
New resistance is 8 ohm
Similar questions