Mon April 30, 2012 By:

What happens to the resistance as the conductor is made thinner?

Expert Reply
Mon April 30, 2012
The resistance of the wire will increase if we made the conductor thinner because R (resistance) = p (rho). l (length) / A (area of cross-section or thickness of wire).
Area is directly proportional to the radius of the wire.

So as you can see if area of cross-section ( or thickness) of wire increases, resistance decreases and more current flows through it.
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