numerical for 1mark

Asked by rohitkumarh94 | 19th Dec, 2009, 10:10: PM

Expert Answer:

hi dear,

circumference = 2 π r, r is the radius of the circle

circumference = 2 π r/100 (convert cm to m)

resistance of wire = 20 π r/50 = 2π r/5

Reistance of each section = 2π r/10

Equivalent resistance = {2 X π r/5 X π r/5} / {π r/5 + π r/5 } = π r/5

Hope this helped.


Answered by  | 20th Dec, 2009, 05:07: AM

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