PH-2009
Cost of electricity
Physics · Secondary 4 · Medium · Cost of electricity
A 3.0 kW water heater is used for 40 minutes each day. Electricity costs \$0.28 per kWh. What is the cost of using the heater for one day?
- \$0.19
- \$0.28
- \$0.56
- \$0.84
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