PH-2011
Cost of electricity
Physics · Secondary 4 · Hard · Cost of electricity
A kettle is rated at 1500 W and is used for 30 minutes each day. The cost of electrical energy is 20 cents per kWh. What is the cost of using the kettle for 30 days?
- \$2.25
- \$4.50
- \$9.00
- \3.50
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