Question

Current electricity 28/04/21 Numericals The resistance of a a wire length 0.6m & diameter 0.4mm is 1.5ohm . find the resistivity of its material
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Answer 1

Answer:

Explanation:

Length of wire = 0.6 m

diameter of wire = 0.4 m

radius of wire = 0.2 m

resistance of wire = 1.5 ohm

Area of wire = $\pi$r^2

= 3.14 * (0.2)^2

= 1.25 m^2

P = resistance

R = Resistivity

A = Area

l = length

R = p * l/A

p = 1.5 * 1.25/0.6

p = 3.12 ohm

Answer 2

Answer:

sorry i dont know

Explanation:

21 Numericals The resistance of a a wire length 0.6m & diameter 0.4mm is 1.5ohm . find the resistivity of its material