# university, physics

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.

1. 👍 0
2. 👎 0
3. 👁 71
1. current=power/120

a. do the math
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.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### 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

asked by ashley on September 3, 2010
2. ### 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

asked by ashley on September 3, 2010
3. ### physics

A 2kg toaster is at rest on a table which has no friction.Sally begins pushing the toaster to the right with a force of 6n for seconds. A)what is the net force on the toaster? B)what is the toaster a cceleration? C)what will the

asked by lisa on May 17, 2012
4. ### Physics

What is the resistance of a coffee maker that draws a current of 5.0A from 117V source? What resistance would have to be added in parallel with the same coffee maker to increase the current to 15.0A? Okay, so for the first part I

asked by Lana on December 10, 2008
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

asked by ashley on September 4, 2010
6. ### geometry

A conical scoop is used to remove coffee from the can an place it into a coffee maker. the scoop has a 1 inch diameter and a 2 inch height. if one level scoop is used to make each cup of coffee, how many cups of coffee can be made

asked by starlight18 on March 8, 2012
7. ### 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? Show all calculations leading to an answer.

asked by Ciara on April 7, 2015
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 55.0 seconds? Show all calculations leading to an answer.

asked by allexelle on July 11, 2015
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? show all the calculations leading to your answer

asked by Ciara on April 7, 2015
10. ### math

A manufacturer produces a 4-cup and 8-cup coffee maker. The 4-cup maker takes 6 hours to produce and the 8-cup takes 9 hours. The manufacturer has at most 500 hours of labor per week. a. Write an inequality to represent the number

asked by bob on February 17, 2014

More Similar Questions