_1. Both AC and Dc described the flow of current in a circuit. 2. Electric charges in both AC and DC changes direction periodically. _3. DC can be produced by a device called alternator. 4. AC can be represented by waves. _5. Triangle waves are often used in digital and switching electronics to test their operation. _6. The most common waveform in AC is square wave. _7. The frequency of direct current ranges from 50 Hz to 60 Hz. _8. Electrons in AC keep changing its direction. _9. Electrons in DC is stationary. _10. AC has no frequency. _11. Both AC and DC uses rotating magnet along the wire. _12. DC provides constant voltage. _13. Thomas Edison introduces AC in America. _14. AC can be readily converted to high voltages.

_1. Both AC and Dc described the flow of current in a circuit. 2. Electric charges in both AC and DC changes direction periodically. _3. DC can be produced by a device called alternator. 4. AC can be represented by waves. _5. Triangle waves are often used in digital and switching electronics to test their operation. _6. The most common waveform in AC is square wave. _7. The frequency of direct current ranges from 50 Hz to 60 Hz. _8. Electrons in AC keep changing its direction. _9. Electrons in DC is stationary. _10. AC has no frequency. _11. Both AC and DC uses rotating magnet along the wire. _12. DC provides constant voltage. _13. Thomas Edison introduces AC in America. _14. AC can be readily converted to high voltages.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

Directions: Write TRUE if the statement is correct and FALSE if the statement is wrong.
_1. Both AC and DC described the flow of current in a circuit.
_2. Electric charges in both AC and DC changes direction periodically.
_3. DC can be produced by a device called alternator.
_4. AC can be represented by waves.
_5. Triangle waves are often used in digital and switching electronics to test their operation.
_6. The most common waveform in AC is square wave.
_7. The frequency of direct current ranges from 50 Hz to 60 Hz.
_8. Electrons in AC keep changing its direction.
9. Electrons in DC is stationary.
_10. AC has no frequency.
_11. Both AC and DC uses rotating magnet along the wire.
_12. DC provides constant voltage.
_13. Thomas Edison introduces AC in America.
_14. AC can be readily converted to high voltages.
-15. Nikola Tesla patented AC motors and transmission.

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