{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# hw 27 - nguyen(jmn727 homework 27 Turner(59070 This...

This preview shows pages 1–2. Sign up to view the full content.

nguyen (jmn727) – homework 27 – Turner – (59070) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 3) 10.0 points An AC voltage of the form V = V max sin2 πft , with frequency 22 Hz and maximum voltage 713 V, is applied across a 33 W light bulb. When the voltage is first applied, what is the current through the circuit? 1. 0 correct 2. the maximum current 3. the rms current Explanation: Let : t = 0 . The current in the circuit is I = I max sin(2 π f t ) = I max sin 0) = 0 . 002 (part 2 of 3) 10.0 points When t = T 4 , where T is the period of the applied voltage, what is the current in the circuit? Correct answer: 0 . 0925666 A. Explanation: Let : V max = 713 V and P = 33 W . t = T 4 = 1 4 f The current in the circuit is I = I max sin(2 π f t ) = I max sin parenleftbigg 2 π f 4 f parenrightbigg = I max sin parenleftBig π 2 parenrightBig = I max = 2 P V max = 2 (33 W) 713 V = 0 . 0925666 A . 003 (part 3 of 3) 10.0 points What is the rms current in the circuit?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the 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