A piece of wire of length "L" and an area of cross-section "A" has a resistance "R". Another piece of wire of the same material and the same length but twice the area of cross-section is connected end-to-end with the previous wire. The effective resistance is:
a.R
b.2R
c.2/3R
d.1/2R
also explain how
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Answer:
option b 2r
Explanation:
as cross section area increased it resistance also increase
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