A residential consumer receives a monthly electricity bill that lists both the…
PHYSICS · Subjective · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
A residential consumer receives a monthly electricity bill that lists both the “maximum (peak) demand” in kW and the “total energy consumed” in kWh.
(i) Define (a) peak load and (b) average load for a household over a billing period.
(ii) Explain why two houses that consume the same total energy in a month can still have different demand charges on their bills.
(iii) A family runs two 2.0kW room-heaters and one 1.2kW electric kettle. All three appliances are never used at the same time. Describe two practical scheduling steps the family can adopt to reduce its peak load without reducing the total useful energy obtained from the appliances.