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Thursday, 28 November 2013

Q.No.13.2: - Do bends in a wire affect its electrical resistance?

Q.No.13.2: - Do bends in a wire affect its electrical resistance?
Ans: - The resistance of wire is
                                       R   =  ρ.L/A

Where “ρ” is the resistivity of the conductor, L is the length and A is the area of cross section of the wire. So according to this equation we can say that bends in a wire will never affect the electrical resistance because we bending the wire its ρ, L and A remain same so its resistance remain same. 

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