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Chapter 32: Q. 45 (page 925)

a. What is the peak current supplied by the emf in FIGUREP32.45?

b. What is the peak voltage across the 3.0mFcapacitor?


Short Answer

Expert verified

a. The peak current supplied by the emf in FIGURE P32.45is 25mA

b. The peak voltage across the 3.0mFcapacitor is6.7V

Step by step solution

01

Part(a) Step 1: Given information 

We are given that the frequency 200Hz, localid="1649935325324" 蔚0=10V, C=3渭Fand Ceq=2渭F

We need to find peak current supplied by the emf in FIGUREP32.45

02

Part(a) Step 2: Simplify 

The peak current can be calculated by I=VXC,We can calculate and by

V=蔚0,XC=12蟺蹿颁, now by putting these value we can get ,

I=蔚012蟺蹿颁=2蟺蹿颁蔚0

Finally putting all the values in above equation , we get

I=2蟺蹿颁蔚0=25mA

03

Part(b) step 1: Given information 

We are given that frequency 200Hz,蔚0=10V,C=3渭Fand Ceq=2渭F

We have to peak voltage in 3.0mFcapacitor.

04

Part(b) Step 2: Simplify 

We can find peak voltage through the given formula ,VC=I脳XC

Where , I=2蟺蹿颁eq蔚0,XC=12蟺蹿颁

Putting the values , we get

VC=CeqC蔚0

Substituting the values ,VC=CeqC蔚0=23脳10=6.7V

VC=I路XCXC=12蟺蹿颁,I=2蟺蹿颁eq蔚0

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Most popular questions from this chapter

In FIGURE, what is the current supplied by the emf when

(a) the frequency is very small and

(b) the frequency is very large

Figure shows voltage and current graphs for a resistor.

a. What is the emf frequency f?

b. What is the value of the resistance R?

c. Draw the resistor鈥檚 voltage and current phasors at t=15ms

a. Evaluate VR in figure at emf frequencies100,300,1000,3000,10000Hz

b. Graph VRversus frequency. Draw a smooth curve through your five points.

A series RLC circuit consists of a 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a 2.1mH inductor, and a 550nF capacitor. It is connected to a 50V rms oscillating voltage source with an adjustable frequency. An oscillating magnetic field is observed at a point 2.5mm from the center of one of the circuit wires, which is long and straight. What is the maximum magnetic field amplitude that can be generated?

In the series RLC circuit represented by the phasors of FIGURE Q32.7, is the EMF frequency less than, equal to, or greater than the resonance frequency 蝇0? Explain.

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