What is the resistance of the wire?
A potential difference of 13 V is found to produce a current of 0.42 A in a wire of length 3 m with a uniform radius of 0.5 cm.
What is the resistance of the wire? Answer in units of Ω.
What is the resistivity of the wire? Answer in units of Ω · cm
- alexLv 710 months agoFavorite Answer
R = V/I , R=resistance , V=voltage , I = current
R = ρ*L/S , ρ = resistivity of the wire , L = length , S = cross section area