Table 1 shows the rated power of four common household appliances and the time each…
PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity
Problem
Table 1 shows the rated power of four common household appliances and the time each one is used in a single day.
Table 1
Appliance Rated power Daily operating time
Lamp 40 W 5 h
Ceiling fan 75 W 8 h
Mixer-grinder 400 W 0.5 h
Washing machine 500 W 1 h
(a) Calculate the electrical energy consumed by each appliance in a day.
(b) Find the total daily energy consumption of the house in kWh.
(c) At a tariff of Rs 6.50 per kWh, determine the cost of running the four appliances for 30 days.