QUESTION 2 The switch in the circuit of figure 2 has been in position a for a long time. At t=0 the switch is moved to position b. Write out all equations and units in full. 2.1) 2.2) 2.3) for t > 0. 2.4) Calculate the initial voltage on the capacitor. Calculate the final voltage on the capacitor. Calculate the time constant (in microseconds)

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter19: Capacitors
Section: Chapter Questions
Problem 3PA: You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors...
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QUESTION 2
The switch in the circuit of figure 2 has
been in position a for a long time. At t = 0 the switch is moved to position b. Write out all equations and units
in full.
2.1)
2.2)
2.3)
for t > 0.
2.4)
3 ΚΩ;
120 V
9 ΚΩΣ
for the capacitor voltage to reach zero after the switch is moved to position b.
10 ΚΩ
b
a
Calculate the initial voltage on the capacitor.
Calculate the final voltage on the capacitor.
20 nF
,t = 0
Calculate the length of time (in microseconds) required
Calculate the time constant (in microseconds)
vc
40 kn 1.5 mA
Figure 2
Transcribed Image Text:QUESTION 2 The switch in the circuit of figure 2 has been in position a for a long time. At t = 0 the switch is moved to position b. Write out all equations and units in full. 2.1) 2.2) 2.3) for t > 0. 2.4) 3 ΚΩ; 120 V 9 ΚΩΣ for the capacitor voltage to reach zero after the switch is moved to position b. 10 ΚΩ b a Calculate the initial voltage on the capacitor. Calculate the final voltage on the capacitor. 20 nF ,t = 0 Calculate the length of time (in microseconds) required Calculate the time constant (in microseconds) vc 40 kn 1.5 mA Figure 2
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