1. The switch has been in position a for a long time. It is switched to position b at t = 0.0 s 9.0 V a b 17 2.0 με ww 50 Ω a. What is the charge Q on the capacitor immediately after the switch is changed? b. What is the current I through the resistor immediately after the switch is changed? c. What is the charge Q on the capacitor at t = 50 μs? d. What is the current / through the resistor at t= 50 μs?

1. The switch has been in position a for a long time. It is switched to position b at t = 0.0 s 9.0 V a b 17 2.0 με ww 50 Ω a. What is the charge Q on the capacitor immediately after the switch is changed? b. What is the current I through the resistor immediately after the switch is changed? c. What is the charge Q on the capacitor at t = 50 μs? d. What is the current / through the resistor at t= 50 μs?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter21: Resistive-capacitive Series Circuits

Section: Chapter Questions

Problem 6RQ: A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating...

See similar textbooks

Similar questions

You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?
A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a current flow of 24 amperes. The circuit current must be reduced to 16 amperes by connecting a second capacitor in series with the first. What is the value of the existing capacitor? What value capacitor should be connected in series with the original capacitor to limit the circuit current to 16 amperes?
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?
A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.
You are an electrician working in an industrial plant. You discover that the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-volt AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 mF and a voltage rating of 240 VAC. The only 10-mF AC capacitor in the storeroom is marked with a voltage rating of 350 WVDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.
What is the unit of measurement for the strength of a capacitor? microamp microtorque microfarad microwatt
1. What is the dielectric?
Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?
A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?
For the circuit shown in figure, C=6.00 µF, e=100 V, and R=500 ohm. After having been at contact a for a long time, the switch throw is rotated to contact b. Find (a) the charge on the capacitor just as the switch throw is moved to contact (b) the current just after the switch throw is rotated to contact (c) the time constant of this circuit (d) How much charge is on the capacitor 6.00 ms after the switch throw is rotated to contact b.
When the switch is in position 1, the circuit will charge the capacitor. Determine the equations for v(t) and i(t) for the charge phase and determine the voltage and current at time, t = 31 ms, in the charge phase.