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March 29, 2017

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A coffee maker is rated at 1200 W, a toaster at 1100 W, and a waffle maker at
1400 W. The three appliances are connected in parallel to a common 120-V household circuit. (a) What is
the current in each appliance when operated independently? (b) What total current is delivered to the
appliances when all are operating simultaneously? (c) Is a 15-A circuit breaker sufficient in this situation?
Explain.

  • university, physics - ,

    current=power/120

    a. do the math
    b. add them
    c. Hmmmm.

    You ought to do engineering estimates first. 1200w is about 10 amp
    1100 watts is about 10 amps
    1400 watts is about 10 amps

    That answers the last part pretty easily.

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