An electric iron draws a steady current of 3 A from the mains.
(a) Calculate the total charge that passes through any cross-section of its heating element in 2 minutes.
(b) Determine the number of electrons corresponding to the charge obtained in part (a). (Take the charge of an electron as 1.6×10−19C.)
(c) State the direction in which these electrons drift inside the metal wire of the heating element. How does this direction compare with the direction of the conventional current stated in the first sentence?