a resistance of 5 ohm is drawn out so that new lenth is twice the original length.what is the new resistance?

Asked by lakshay | 27th Apr, 2012, 06:50: PM

Expert Answer:

Length got doubled 
 
pi (r12) l1 = pi (r22) l2
 
(r12) /  (r22) = 2
 
(r22) = (r12) /2
 
So resiatnace will be 4 times & it will be 5 * 4 = 20 ohms
 

Answered by  | 30th Apr, 2012, 10:43: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.