Answer :
To calculate the energy consumption of a 3000W heater running for 30 minutes, convert its power to 3kW, time to 0.5 hours, and multiply to find the energy usage: 1.5kWh.
The energy consumed by a 3000W heater operating for 30 minutes can be calculated using the formula for energy: E = Pt, where E is the energy in kilowatt-hours (kWh), P is the power in kilowatts (kW), and t is the time in hours.
First, we convert the power rating to kilowatts: 3000W = 3 kW. Next, we convert the time from minutes to hours: 30 minutes = 0.5 hours. We can then use the energy formula:
E = (3 kW) times (0.5 hours) = 1.5 kWh.
The heater uses 1.5 kWh of energy during the 30 minutes it operates.
