Question

the resistance of a metal wire of length 1 metre is 10 raise to the power 4 at 20 degree Celsius at the diameter of the wire is zero point 15 mm find the resistivity of the metal at the temperature

Answer 1

we know from the extension of Ohm's law: R = ρl/A [R= 26Ω; l = 1m; diameter = 0.3mm, hence radius = 0.15mm, or, 0.15*10^(-3)m] putting this value in the relation, and finding ...

Answer 2

Hope it helps you......

plz mark the brainliest

plz follow me