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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ReplyDeleteGood...One!
ReplyDeletein some cases bends in wire affect its resistance because when we have a large bend then:
ReplyDelete1) Area decrease
2) Length increase a bit
3) resistance increase