Question

A 1.5m wire carries a 8A current when a potential difference of 67v is applied what is the resistance of the wire

Answer 1

Data is inappropriate

here, we need gauge of the wire i.e., diameter of the wire, so that we calculate the resistance by using the formula

R = ρl/A

where R= resistance ; Ω

l = length of wire ; m

A = area of wire ; m²

ρ = resistivity ; Ω-m

But in general ohms law is

V = I R

R = V/I ;

but here we also calculate "R" from length of wire in which the current is flowing.

I hope it is helpful to you.