university, physics

posted by .

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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Science

    What is the current in the 30-ohm heating coil of a coffee maker that operates on a 120-volt circuit?
  2. Physics

    What is the resistance of a coffee maker that draws a current of 5.0A from 117V source?
  3. science

    On a particular day, the following appliances are used for the times indicated: coffee maker, 40 min, and microwave oven, 23 min. Using the power requirements given in the table below, find how much it costs to use the appliances at …
  4. phyical science

    On a particular day, the following appliances are used for the times indicated: coffee maker, 40 min, and microwave oven, 23 min. Using the power requirements given in the table below, find how much it costs to use the appliances at …
  5. science

    On a particular day, the following appliances are used for the times indicated: coffee maker, 40 min, and microwave oven, 23 min. Using the power requirements given in the table below, find how much it costs to use the appliances at …
  6. physics

    Please check my work here: Resistors of 30 ohms and 60 ohms are connected in parallel and joined in series to a 10 ohm resistor. The circuit voltage is 180 volts. Find: a)the voltage of the parallel circuit b)the voltage across the …
  7. Physics-Electricity

    A toaster consists of 4 heating elements that are connected in parallel. The toaster is connected to a 240 V mains supply. When the toaster is switched on, a current of 2.5 A is drawn from the mains supply. Calculate the electrical …
  8. Physics!

    An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is given off by the toaster in 42.0 seconds?
  9. Physics!

    An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is given off by the toaster in 42.0 seconds?
  10. physics

    An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is given off by the toaster in 55.0 seconds?

More Similar Questions