Question

what is electrical resistivity ? derive its si unit. in a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 100 ma. if the length of the wire is doubled, how will the current in the circuit change ? justify your answer

Answer 1

SI unit is ohm/meter

Answer 2

restivity refers to specific resistance of a material conductor. its si unit is rho . current would be four times the originl