4. In the circuit shown, the switch has been in position a for a very long time before it moves toposition b at t = 0. Determine (a) the value of the current and voltage across the inductor whenthe switch is still in position a; (b) Determine the value of the current and voltage across theinductor as a function of time when the switch is in position b.2 H↓₁1052W1592w552w75 VH120 V-|||

Answered: Image /qna-images/answer/51e40d72-4322-4d16-838e-e68d3d18f101.jpg

Answered: In the circuit shown, the switch has…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Capacitors

Section: Chapter Questions

Problem 2PA: You are an electrician working in an industrial plant. You discover that the problem with a certain...

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You are a journeyman electrician working in an industrial plant. Your task is to connect an inductor to a 480-V, 60-Hz line. To determine the proper conductor and fuse size for this installation, you need to know the amount of current the inductor will draw from the line. The nameplate on the inductor indicates that it has an inductance of 0.1 H. An ohmmeter reveals that it has a wire resistance of 10 . How much current should this inductor draw when connected to the line?
EXAMPLE + 5V – 0.1uF At the instant the switch makes a contact with terminal a, the voltage across the capacitor is 5V. The 10V b 6V 100k2 switch remains at a for 9 ms then moves to terminal b. How many milliseconds after making contact with terminal a does the opamp 8V -6V saturate?
switch is in position 2, circuit will discharge the inductor draw the circuit in discharge phase, the equations for v(t) and i(t) of the inductor for the discharge phase, and determine the time constant for the discharge phase
The following figure represents an RC-Circuit with the switch. In Figure A, the capacitor is initially uncharged. In Figure B, the capacitor is initially fully charged. 1) Draw and label the current direction immediately after the switch is closed for each figure. 2) Consider Figure A. What is the voltage across the capacitor as t → 0? Explain. 3) Consider Figure B. Is the voltage across the resistor increasing, decreasing or staying the same as t → 0? Explain. A) B) R C
For the circuit at right: a. Immediately after the switch is closed, what is the current in the inductor? 12V b. A long time later, what is the current through the inductor? c. What is the energy stored in the inductor in part (b)? d. A long time later, the switch is opened. Immediately after, what is the voltage across the inductor?
In the above circuit, the switch is open for a long time.i)The switch closes for 50 us. What is the current through the inductor? Also, what is the voltage at the output with respect to ground just before the switch open?ii) The switch closes. What is the maximum current the inductor will see?
(surtch ) Consider the Circuit below: RI=200r a 7. R2 35mH 1000 For parts a-c assume the switch S is in position "a" after it was off for a long time. a) Find the time constant t for the switch in position "a". b) Determine the maximum inductor current, Imax. c) When will the inductor current be 95% of Imax. For parts d-f assume the switch S is in position “b" after it was in position "a" for a long time d) Find the time constant t for the switch in position "b". e) When will the inductor current be 5% of its initial value (initial value is when the switch is switched from “a" to “b") f) How much energy is dissipated by the resistance if the switch is in position "b" for a long time. eele
The current in a 20 mH inductor has the waveform shown in Figure Q1(c). Draw the waveform for the inductor voltage. i(t) (mA) 20 – 2 t (ms) Figure Q1(c)
1. A 2F capacitor is connected in series with a diode and a 60 resistor. The voltage of the battery is 9V. The forward voltage drop of the diode is 0.7V. Flip to close the switch at t=0. Determine the voltage and current of the capacitor at t=0, t=12s, t=24s, and t=36s. (The following table may help you with this question. Feel free to use this table (or not).) Vc VR I R1 60 H Time=0 Time=12s Time=24s Time=36s
Consider the circuit shown below, with an initially uncharged capacitor C and two identical resistors R. R O www V I C I₂ R C R At the instant the switch is closed, the current through the capacitor will be: zero At the instant the switch is closed, the current through the right-side resistor will be: V/R, directed Up After the switch has been closed for a very long time, it is opened. The current through the right-side resistor will be V/R, directed Down The switch is closed at t = 0. At t = ~ (long after) the current through the right-side resistor will be: V/2R, directed Down ✓ The switch is closed at t = 0. At t = ~ (long after) the current through the capacitor will be: V/2R, directed Up After the switch has been closed for a very long time, it is ope ed. The current through the be? V/R, directed Down pacitor will
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In the diagram below, the switch S has been closed for a long time. A) What is the output voltage Vout? What is the charge on the capacitor? b) The switch is opened, so the output voltage increases. What is the time constant that describes the charging of the capacitor in terms of R and C? c) When Vout reaches 10 V, the switch closes and the capacitor begins to discharge. What is the time constant that describes the discharging in terms of R and C? Hint: Apply Kirchhoff's Rules to both loops and the sum of the currents at the junction above the capacitor in the diagram, and use I=dq/dt. If the switch opens when Vout reaches a lower value, say 5V, the capacitor will charge again, and thus one can cycle the voltage with a time constant determined by the circuit: this demonstrates the principle of operation of an electronic timer. 4R S 15 V Vout R

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