Two room heaters, A and B, are connected to a 230 V supply.
• Heater A has a resistance of 46 Ω.
• Heater B draws a current of 4 A when in use.
(i) Calculate the power output of heater A.
(ii) Calculate the power output of heater B.
(iii) Which heater produces more power and by how many watts?
(iv) If both heaters are switched on together for 2 hours, determine the total electrical energy consumed in kilowatt-hour.
a. (i)
b. (ii)
c. (iii)
d. (iv)