The resistance of a bagel toaster is 19 . To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster?
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IF that is 19 ohms, power is 120²/19 = 758 watts or 758 joules per second.
758 joules per second x 60 seconds = 45500 joules
or 0.0126 kW-hours
758 joules per second x 60 seconds = 45500 joules
or 0.0126 kW-hours