Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Textbook Question
Chapter 10, Problem 14RQ
Distinguish between the ac and dc.
Expert Solution & Answer
To determine
The difference between the dc and ac.
Answer to Problem 14RQ
The direct current does not vary with time, while alternating current varies with time.
Explanation of Solution
The difference between the direct current and alternating current are following:
Sr.No. | Direct current (dc) | Alternating current (ac) |
---|---|---|
1. | The direction of the current does not vary with time. | The direction of current vary with time. |
2. | The polarity of the electrical device remains same for the supply. | The polarity of the electrical device changes continuously. |
3. | The current in the dc supply remain constant throughout at all the time. | The current in the ac supply vary between the maximum and minimum value of the supply. |
Table (1)
Conclusion:
Therefore, the direct current does not vary with time, while alternating current varies with time.
Chapter 10 Solutions
Conceptual Physical Science Explorations
Ch. 10 - Which part of an atom is positively charged and...Ch. 10 - How does the charge of one electron compare with...Ch. 10 - Prob. 3RQCh. 10 - What is meant by the charge is conserved?Ch. 10 - How is Coulombs law similar to Newtons law of...Ch. 10 - How does an electrically polarized object differ...Ch. 10 - Why do electrons rather than protons make up the...Ch. 10 - How much energy is given to each coulomb of charge...Ch. 10 - Does electric charge flow across a circuit or...Ch. 10 - Which has the greater resistance, a thick wire or...
Ch. 10 - When the voltage across the ends of a piece of the...Ch. 10 - When the resistance of a circuit is doubled and no...Ch. 10 - What is the function of the third prong on the...Ch. 10 - Distinguish between the ac and dc.Ch. 10 - Does a battery produce dc or ac? Does the...Ch. 10 - Which draws more current, a 40-W bulb or 100-W...Ch. 10 - In a circuit consisting of two lightbulbs...Ch. 10 - In a circuit consisting of two lightbulbs...Ch. 10 - How does the total current through the branches of...Ch. 10 - Are household circuits normally wired in series or...Ch. 10 - Calculate the current in the 240- filament of a...Ch. 10 - Calculate the current in a toaster that has a...Ch. 10 - Calculate how much current warms your feet from...Ch. 10 - Calculate the current that moves through your...Ch. 10 - Calculate the power of device that carries 0.5 A...Ch. 10 - Calculate the power of hair dryer that operates on...Ch. 10 - Shown below are three separate pair of point...Ch. 10 - Compare the circuit below according to the...Ch. 10 - Rank the current in three lightbulbs and the...Ch. 10 - Rank the current in three branches and the current...Ch. 10 - When combining the fur of a cat, electrons...Ch. 10 - If electron were positive and protons were...Ch. 10 - The 5000 billion freely moving electrons in a...Ch. 10 - How does the magnitude of electrical force between...Ch. 10 - How does the magnitude of electric force compare...Ch. 10 - Two equal charges exert equal forces on each...Ch. 10 - When a car is moved into a painting chamber, a...Ch. 10 - What happens to the brightness of light emitted by...Ch. 10 - Your tutor tells you that an ampere and a volt...Ch. 10 - In which of the circuit below does a current exist...Ch. 10 - Does more current flow out of a battery than into...Ch. 10 - Only a small percentage of the electric energy...Ch. 10 - Why are thick wires rather than thin wires usually...Ch. 10 - What is the effect on current in a wire if both...Ch. 10 - Will the current in a lightbulb connected to a...Ch. 10 - Which will do less damage-plugging a 110-V...Ch. 10 - The damaging effects of electric shock result from...Ch. 10 - If several bulbs are connected in series to a...Ch. 10 - In the circuit shown, how does the brightness of...Ch. 10 - As more and more bulbs are connected in series to...Ch. 10 - Two point charges are separated by 6cm. The...Ch. 10 - Make use of Coulombs law here. Suppose you have a...Ch. 10 - A radio speaker has a resistance of 8 . Show that...Ch. 10 - Rearrange the equation current =...Ch. 10 - What is the effect on current through a circuit of...Ch. 10 - Begin with the definition of power (current x...Ch. 10 - When you brush your hair and scrape electrons from...Ch. 10 - According to Coulombs law, a pair of particles...Ch. 10 - When you buy a water pipe in a hardware store, the...Ch. 10 - To receive an electric shock, there must be (a)...Ch. 10 - A 10- resistor carries 10A. The voltage across the...Ch. 10 - You can touch and discharge a 10,000-V Van de...Ch. 10 - Compared with the amount of current in the...Ch. 10 - As more lamps are connected to a series circuit,...Ch. 10 - As more lamps are connected to a parallel circuit,...Ch. 10 - The difference between dc and ac in electrical...
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