{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Exam 2 key

# 13 a flying wire problem

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: rmer on a pole outside your house. The drawing shown below is a schematic representation. The primary side is connected through the power lines to a distribution substation; the rms value of V1 is 7260 VAC. The secondary side is connected to your house; the rms value of V2 is 220 VAC. You use this 220 VAC to run your clothes dryer, whose heater coil has a resistance of 9Ω. When you run your dryer, how much current flows on the primary side? A. < 1 Amp B. 2 Amps C. 12 Amps D. 23 Amps Secondary: 220Voltsrms I2 = = 24.4 Ampsrms 9! V 220V V1 I1 = V2 I 2 ! I1 = I 2 2 = (24.4 A) = 0.74 A V1 7260V Note: you are essentially given the turns ratio because you are given the ratio of V1 to V2. You need not know anything about the actual values of N1 or N2. 13. A flying wire problem: You hold a metallic meter stick in a horizontal orientation and...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern