Electric Power

electric power?

problem: a drilling machine operates with an electric power consumption of 840 W. How much does it cost to operate the machine continuously for 8 hours if the elctricity costs $0.080/kwh?

Energy (E) is power (P) times time (t)
E=P t
Cost = E (rate)

Cost = P t rate

Cost=840 x 8 hours (0.080/kwh) (1/1000)
Cost=$.537

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