Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
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Chapter 20, Problem 1RQ
Can current flow through a capacitor?
Expert Solution & Answer
To determine
Whether the current can flow through capacitor.
Answer to Problem 1RQ
No, current cannot flow through a capacitor.
Explanation of Solution
Description:
Construction wise, a capacitor is composed of two metal plates separated by an insulating material called dielectric. As there is no closed path available between the plates, the current cannot pass through a capacitor when at rest. However, when a capacitor is being charged or discharged, it gives a closed path, thus allowing current to pass through it.
To summarize, current cannot flow through a capacitor. However it allows current to pass through during the time when it is being charged or discharged.
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Chapter 20 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 20 - Can current flow through a capacitor?Ch. 20 - What two factors determine the capacitive...Ch. 20 - How many degrees are the current and voltage out...Ch. 20 - Does the current in a pure capacitive circuit lead...Ch. 20 - 5. A 30- capacitor is connected into a 240-V,...Ch. 20 - 6. A capacitor is connected into a 1250-V, 1000-Hz...Ch. 20 - 7. A capacitor is to be connected into a 480-V,...Ch. 20 - On the average, by what factor is the life...Ch. 20 - A capacitor is connected into a 277-V, 400-Hz...Ch. 20 - A capacitor has a voltage rating of 350 VAC. Can...
Ch. 20 - A utility company plans to connect a total of 20 F...Ch. 20 - What is the minimum AC voltage rating of each...Ch. 20 - What is the total current flow through the circuit...Ch. 20 - What is the minimum KVAR rating of each capacitor...Ch. 20 - You are working as an electrician in an industrial...Ch. 20 - You are working in an industrial plant. You have...Ch. 20 - Capacitive Circuits Fill in all the missing...Ch. 20 - A 4.7-F capacitor is connected to a 60-Hz power...Ch. 20 - A capacitor is connected to a 208-volt, 60-Hz...Ch. 20 - A 0.47-F capacitor is connected to a 240-volt...Ch. 20 - Three capacitors having capacitance values of...Ch. 20 - A capacitor has a capacitive reactance of 300 ...Ch. 20 - A pure capacitive circuit is connected to a...
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- 4. In what form is the energy of a capacitor stored?arrow_forwardIn reference to the load, how are capacitors connected to help prevent voltage spikes and surges? Are capacitors connected in parallel or in series with the load?arrow_forwardA thin metallic foil is placed between the plates of a flat capacitor parallel to them. How does this affect capacity? What if you join a plate with a wire?arrow_forward
- 2. What type of energy is stored up in a capacitor? In a storage cell? In an inductive circuit? Why are capacitors not used in place of secondary batteries?arrow_forwardWhat are very rough estimates of the graphs of capacitor voltage vs. time and resistor voltage vs. time while charging and discharging?arrow_forwardRegarding behavior of inductors and capacitors in circuits, select the correctstatement -a) Voltage leads current in a capacitive circuit,b) Current leads voltage by 180 degrees in a pure capacitor,c) Voltage leads current by 45 degrees in a pure inductor,d) Current leads voltage in an inductive circuit,e) Current lags voltage in a pure capacitor by 90 degrees,f) Current lags voltage by 90 degrees in a pure inductorarrow_forward
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