A wire of resistance 4 ohm redrawn by pulling it doubled what is its new resistance?
Answers
Answered by
4
Answer:
So, if wire is cylindrical, stretching its length to twice, will reduce the cross sectional area by half (keeping the volume of wire same in both cases). So new resistance will be '4′ times the original resistance i.e. 16 ohm
Attachments:
Similar questions