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# Announcements A B C Be sure to fill out the online course PowerPoint Presentation, PPT - DocSlides

giovanna-bartolotta | 2018-09-21 | General
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evaluations. HW 12 is now due FRIDAY DEC 9. th. , 8AM. HW 13 is now due TUESDAY DEC 12. th. , 8AM. Today, we will cover the rest of the lecture for Week 12 AND the entire lecture for Week 13.. Recitations next week will cover problems from HW 12 and HW 13. ID: 674281

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Slide1

Announcements

A

B

C

Be sure to fill out the online course evaluations

HW 12 is now due FRIDAY DEC 9

th

, 8AM

HW 13 is now due TUESDAY DEC 12

th

, 8AM

Today, we will cover the rest of the lecture for Week 12 AND the entire lecture for Week 13.

Recitations next week will cover problems from HW 12 and HW 13

Lecture next week will cover (a) problems from HW 13 (if any are left). We will also begin reviewing for the final exam.

Recitation on Monday Dec 12

th

will also be a review for final

Slide2ICLICKER QUESTION #0

A

B

C

8:30-11AM11:30-2pm2:30-5pmNone of these times are good, I would prefer a different day.

Option Review for the Final exam will be on MONDAY Dec 19

th

at the following time:

Slide3Show Active Figure 33.3 of

Phasor

Slide4Clicker Question #1

C

Consider the voltage phasor in Figure 33.4, shown at three instants of time. Choose the part of the figure that represents the instant of time at which the instantaneous value of the voltage has the largest magnitude.

(a)

(b)

(c)

Figure 33.4

Slide5RMS current

Slide6Current LAGS Voltage in Inductor

Show Active Figure 33.6

Slide7Clicker Question #2

Consider the AC circuit in Figure 33.8. The frequency of the AC source is adjusted while its voltage amplitude is held constant. When does the light bulb glow the brightest?

It glows brightest at high frequencies.

It glows brightest at low frequencies.

The brightness is the same at all frequencies.

Figure 33.8

Slide8Current LEADS voltage in a Capacitor

Show Active Figure 33.10

Slide9Clicker Question #3

A

B

C

Consider the AC circuit in Figure 33.12. The frequency of the AC source is adjusted while its voltage amplitude is held constant. When does the light bulb glow the brightest?

It glows brightest at high frequencies.

It glows brightest at low frequencies.

The brightness is the same at all frequencies.

Figure 33.12

Slide10RLC Series Circuit

Slide11Phase Relation of various voltages

Slide12Clicker Question #4

C

Label each part of Figure 33.16, (a), (b), and (c), as representing

XL >

XC, XL = XC, or XL < XC. Describe figure (a).

X

L

> X

C

X

L

= X

C

X

L

< X

C

Figure 33.16

HINT:

Slide13What is the impedance of a series RLC circuit at resonance?

larger than

R

less than

R equal to R

impossible to determine

Clicker Question

#5

Slide14AB

C

Transformer can “step up” or “step down” the voltage.

Slide15Next Slides