   Chapter 18, Problem 40P

Chapter
Section
Textbook Problem

A 1 150-W toaster and an 825-W microwave oven are connected in parallel to the same 20.0-A, 120-V circuit. (a) Find the toaster’s resistance R. (b) If the microwave fails and is replaced, what maximum power rating can be used without tripping the 20.0-A circuit breaker?

(a)

To determine
The toaster's resistance R.

Explanation

Given Info: Toasters power Ptoasters is 1150W Supplied voltage ΔV is 120V

Explanation:

Formula to calculate the toaster's resistance R is,

Ptoasters=(ΔV)2R

On rearrange

R=(ΔV)2Ptoasters

• Ptoasters is the toasters power

(b)

To determine
The maximum microwave power Pmicrowavemax rating can be used without tripping the 20.0-A circuit breaker.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Complete the following table:

Chemistry & Chemical Reactivity

What are the largest known structures in the Universe?

Horizons: Exploring the Universe (MindTap Course List)

Compare the lock-and-key theory with the induced-fit theory.

Chemistry for Today: General, Organic, and Biochemistry 