Mastering Physics: PHY T3T HomeworkT https://session.masteringphysics.com/myct/i

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Mastering Physics: PHY T3T HomeworkT https://session.masteringphysics.com/myct/itemView?assignmentProblemID=61880245&offset-next; PHY 131 Spring 2016 PHY 131 Homework 11 Problem 35.5- Copy Signed in as Terick Azeez | Helo Close Resources « previous | 2 of 7 next » Problem 35.5 - Copy Part A A 170 resistor is connected to an AC source with a maximum What is the angular frequecy of the AC source? emf E= 7.00 V . The frequency of the AC source is f = 100 Hz. rad/s Submit My Answers Give Up Part B What is the period of the AC source? Submit My Answers Give Up Part C What is the maxmium current in the circuit? max =

Explanation / Answer

Emax = 7 V

frequency f = 100 Hz

resistance R = 170 ohms

A)

w = 2*pi*f = 2*pi*100 = 628.3 rad/s

part B)

T = 1/f = 1/100 = 0.01 s

part C)

Imax = Emax/R = 7/170 = 0.0412 A

part D)

Irms = Imax/sqrt2 = 0.029 A

part E)

Paverage = Emax^2/2R = 7^2/(2*170) = 0.144 W

part F)

i = Emax/R*cos(wt)

i = 7/170*cos(2*pi*100*1.5*10^-3)

i = 0.0242 A

part G)

P = i^2*R = 0.0242^2*170 = 0.0996 W

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