Question 1 of 10
What is the primary difference between AC and DC current?
AC current alternates direction, unlike DC which flows steadily in one direction.
Question 2 of 10
What does 'AC' stand for in electrical terminology?
AC stands for Alternating Current, which describes the nature of the current's flow.
Question 3 of 10
In AC circuits, the direction of electron flow:
The key characteristic of AC is that the electron flow reverses direction regularly.
Question 4 of 10
What is the term used to describe one complete cycle of AC current?
A period is the time it takes for one complete cycle of AC current.
Question 5 of 10
What is the typical range of AC frequencies used in power supply standards?
The most common AC frequencies worldwide are 50 Hz and 60 Hz.
Question 6 of 10
The continuous back-and-forth motion of electrons in AC occurs in:
Conductors, like wires, allow the free movement of electrons, enabling AC to function.
Question 7 of 10
What is the unit of measurement for the frequency of AC current?
The frequency of AC current is measured in Hertz (Hz), representing cycles per second.
Question 8 of 10
Which type of current is generally used for long-distance power transmission?
AC is used for long-distance power transmission due to its ability to be efficiently stepped up and down in voltage using transformers.
Question 9 of 10
In AC, electrons move:
The defining characteristic of AC is the periodic reversal of the direction of electron flow, meaning back and forth.
Question 10 of 10
The efficiency of AC power transmission over long distances is primarily due to:
Transformers allow for efficient voltage changes, reducing energy loss during transmission.
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