State True or False A) The time rate at which charge flows through the area is defined as the electric current. B) The resistance of a conductor is proportional to the voltage difference across the conductor and the current flowing through it. C) the radius of a nichrome wire is 0.32mm. Hence the resistance per unit length of wire is about 3.1 om/m D) For a metal, the resistivity versus temperature curve is liner over a wide range of temperature, and resistivity increases with temperature. E) An electric heater is constructed by applying a potential difference of 120V across a Nichrome wire that has a total resistance of 12 om. hence the power rating of this appliance is 1.44 kW