Question

The resistance of a wire of 0.01cm radius is 10 ohm .

Answer 1

Answer:

The resistance of a wire of 0.01cm radius is 10 ohm .

Explanation:

If the resistivity of the material of the wire is 50x10^-8 ohm-meter, find the length of the wire

Answer 2

Explanation:

Resistance = Resistivity × Length /Area

Now

l = R × A / p

l = 10 π ( 1 × 10^-4)square/ 50 × 10^-8

l = 10 × 3.14 ( 1 × 10^-4)^2/ 50 × 10^-8

l = 314/500

l = 0.628 metre Ans....

Hope it will be helpful