PH-2018
Cost of electricity
Physics · Secondary 4 · Medium · Cost of electricity
A 60 W lamp is left switched on for 5.0 hours each day. Electrical energy costs \$0.30 per kWh.
What is the cost of running this lamp for 30 days?
What is the cost of running this lamp for 30 days?
- \$2.70
- \$0.90
- \$4.50
- \$9.00
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