Question

A wire is 1m long , 0.2mm in diameter qnd has resistance of 10 ohms? Calculate its resistivity

Answer 1

Hi

We know that resistivity = R × A / L

where R is resistance , A is area and L is the length of the wire.

A = π r ². r = 0.2m / 1000. = 2 × 10 ^-4m

resistivity = 10 ohm × π ( 2 × 10^-4)² m². / 1 m


resistivity = 1.2 × 10 ^ -6 ohm m^-1



Have a great future ahead....

Answer 2

heya!!!

here is ua answer: