A wire of initial length L0 and radius r0 has a measured resistance of 3 Ohms. The wire is drawn under tensile stress to a new uniform radius of r = 0.1r0. What is the new resistance of the wire? Hint: Assume the radius and the length of the wire can change.
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
A wire of initial length L0 and radius r0 has a measured resistance of 3 Ohms. The wire is drawn under tensile stress to a new uniform radius of r = 0.1r0. What is the new resistance of the wire?
Hint: Assume the radius and the length of the wire can change.
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