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CBSE Class 10 Answered

numerical for 1mark
Asked by rohitkumarh94 | 19 Dec, 2009, 10:10: PM
answered-by-expert 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.

Topperlearning.com

 

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