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A 4 Omega non insulated resistance wire ...

A `4 Omega` non insulated resistance wire is bent in the middle by `180^@` and both the halves are twisted with each other. What will be its new resistance ?

Text Solution

Verified by Experts

Here, `R= (rhol)/(A) = 4`,
`R'=(rho(l//2))/2A = (rho l)/(4A) = R/4 = 4/4 = 1Omega`
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