19. Three point charges are located on a circular arc as shownin Figure P22.19. (a) What is the total electric field at P, thecenter of the arc? (b) Find the electric force that would beexerted on a -5.00-nC point charge placed at P.+3.00 nC-2.00 nC4.00 cm30.0°30.0°4.00 cm+3.00 nCP power rating of 150 W, and bulb 3 has a 100-W rating. Find(a) the rms current in each bulb and (b) the resistance ofeach bulb. (c) What is the total resistance of the combina-tion of the three lightbulbs?maxR5. In the AC circuit shown in Figure P32.3, R = 70.0 and theoutput voltage of the AC source is AV sin wt. (a) If AV₂ =0.250 AV for the first time at t = 0.010 0 s, what is theangular frequency of the source? (b) What is the next valueof t for which AVR = 0.250 AVmax?maxSECTION 32.3 Inductors in an AC Circuit6. In a purely inductive AC circuit as shown in Figure P32.6,100 V. (a) The maximum current is 7.50 A atTAV1max50.0 Hz. Calculate the inductance L. (b)At

Answered: Image /qna-images/answer/7722b664-44cf-41d1-8000-f98c61e6f5be.jpg

19. Three point charges are located on a circular arc a in Figure P22.19. (a) What is the total electric field: center of the arc? (b) Find the electric force that w exerted on a -5.00-nC point charge placed at P. +3.00 nC -2.00 nC 4.00 cm 30.0° 30.0° 4,00 cm +3.00 nC P

19. Three point charges are located on a circular arc a in Figure P22.19. (a) What is the total electric field: center of the arc? (b) Find the electric force that w exerted on a -5.00-nC point charge placed at P. +3.00 nC -2.00 nC 4.00 cm 30.0° 30.0° 4,00 cm +3.00 nC P

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter33: Inductors And Ac Circuits

Section: Chapter Questions

Problem 33PQ

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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

19. Three point charges are located on a circular arc as shown
in Figure P22.19. (a) What is the total electric field at P, the
center of the arc? (b) Find the electric force that would be
exerted on a -5.00-nC point charge placed at P.
+3.00 nC
-2.00 nC
4.00 cm
30.0°
30.0°
4.00 cm
+3.00 nC
P

power rating of 150 W, and bulb 3 has a 100-W rating. Find
(a) the rms current in each bulb and (b) the resistance of
each bulb. (c) What is the total resistance of the combina-
tion of the three lightbulbs?
max
R
5. In the AC circuit shown in Figure P32.3, R = 70.0 and the
output voltage of the AC source is AV sin wt. (a) If AV₂ =
0.250 AV for the first time at t = 0.010 0 s, what is the
angular frequency of the source? (b) What is the next value
of t for which AVR = 0.250 AVmax?
max
SECTION 32.3 Inductors in an AC Circuit
6. In a purely inductive AC circuit as shown in Figure P32.6,
100 V. (a) The maximum current is 7.50 A at
TAV
1
max
50.0 Hz. Calculate the inductance L. (b)
At

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