An instrument is rated at $250 \mathrm {~W}$ if it is connected across a $120 - \mathrm { V }$ dc power supply.
(a) What current does it draw under normal operation?
(b) What is its resistance?
(c) How many kilowatt-hours does it use in a day if it is left on all the time?

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The Answer of An instrument is rated at $250 \mathrm {~W}$ if it is connected across a $120 - \mathrm { V }$ dc power supply.
(a) What current does it draw under normal operation?
(b) What is its resistance?
(c) How many kilowatt-hours does it use in a day if it is left on all the time?

An Instrument Is Rated At 250 W250 \mathrm {~W}250 W If It Is Connected Across A

An Instrument Is Rated At $250 \mathrm {~W}$ If It Is Connected Across A