0

Guest

Courses New

A wire of 2ohm is redrawn so that its length becomes four times the resistance of the withdtawn wire is.?

A wire of 2ohm is redrawn so that its length becomes four times the resistance of the withdtawn wire is.? 

Grade:12

1 Answers

Susmita
425 Points
5 years ago
Volume remains constant.
V'=V
Or,A'*4L=A*L
Or,A/A'=4
Resistance R=rho*L/A
R'/R=(L'/L)*(A/A')2=4*4=16
R'=16R=16*2=32 ohm
 
 

Think You Can Provide A Better Answer ?

Other Related Questions on Electric Current

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More