a 6 ohm resistance wire is doubled up by folding . calculate the new resistance of the wire.
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Answer:
R = 6 Ohms
Wire is doubled so,
Area (A) = 2Alength (l) = l/2
New Resistance will be
Rnew = ρl/4A
By using eqaution (1) we can simplify the above equation as
Rnew = R/4
Rnew = 6/4
Rnew = 1.5 Ohms
Hence, the new Resistance of wire is 1.5 Ohms.
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