In the circuit at right, a 100 mH inductor and a 5 N resistor are connected by a switch to a 6 V battery. hlllo a. After the switch is thrown to position a (connecting the battery), what time interval elapses before the current through the inductor is 200 mA? b. What is the current through the inductor 10 seconds later? c. Now the switch is quickly thrown from position a to position b, such that the inductor and resistor form a complete circuit separate from the battery. How much time elapses before the current falls to 200 mA? R L bọ

In the circuit at right, a 100 mH inductor and a 5 N resistor are connected by a switch to a 6 V battery. hlllo a. After the switch is thrown to position a (connecting the battery), what time interval elapses before the current through the inductor is 200 mA? b. What is the current through the inductor 10 seconds later? c. Now the switch is quickly thrown from position a to position b, such that the inductor and resistor form a complete circuit separate from the battery. How much time elapses before the current falls to 200 mA? R L bọ

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter20: Capacitance In Ac Circuits

Section: Chapter Questions

Problem 7PP: A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a...

See similar textbooks

Similar questions

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.
An RC series circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 and has a voltage drop of 65 volts. What is the capacitance of the capacitor?
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?
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.
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 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?
What is the value of the induced voltage of the self-inductance when the rate of current is from 200 uA to 20 uA and the total time interval is 5 uS?
1. Which of the following answers best describes discontinuous conduction mode? A. The inductor voltage ripple goes negative B. The inductor current ripple stays positive C. The inductor current ripple falls to zero D. The output current ripple falls to zero
What is the equivalent resistance ?? and what is the total inductance ??
Find the current through the inductor shown in Figure lb. (i/p is AC, consider results upto one decimal place). 1. 100 V 100 Hz 500 L=60H Figure lb
A 5uF capacitor is connected across an emf of 50 Volts maximum value and frequency of 1000 cycles. What is the equation of the current?
1. A purely resistive circuit the current is leading by 90° with respect to voltage. 2. A purely inductive circuit the current is lag behind the voltage by 90°. 3. A purely capacitive circuit the current is lead by 90° with respect to the voltage. 4. A capacitor element stored magnetic energy. 5. An inductor element stored electrical energy. 6. Resistor elements consume power. 7. Angle between current and voltage is called power. 8. The power factor angle for a purely resistive is zero. 9. The power factor angle for a purely inductive load is -90°. 10. The power factor of a purely capacitive is leading.