A wire 3.31 m long and 4.92 mm in diameter has a resistance of 13.2 m2. A potential difference of 31.6 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made. (a) Number (b) Number (c) Number Units Units Units

A wire 3.31 m long and 4.92 mm in diameter has a resistance of 13.2 m2. A potential difference of 31.6 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made. (a) Number (b) Number (c) Number Units Units Units