Two resistors of 4Ω and 6Ω are connected in series to a 220V mains supply.
(a) Calculate the equivalent resistance of the series combination.
(b) Determine the current flowing through the circuit.
(c) Find the power dissipated in each resistor.
(d) If the circuit is kept on for 5minutes, compute the heat produced in each resistor and state the ratio of the heat produced in the 4Ω resistor to that in the 6Ω resistor.