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Mobile App Chapter 20: Q16CQ (page 731)
Why do voltage, current, and power go through zerotimes per second forrole="math" localid="1655530064198" -Hz AC electricity?
Short Answer
AC power supply has zero value for power voltage, and the current is times per second.
Step by step solution
Definition of AC power
A current that varies its magnitude and polarity at periodic intervals is known
as an alternating current.
Explanation of solution with graph
We know that AC has a sinusoidal relationship with time and that sinusoidal waves
pass zero twice in a single period (see figure).
The time when it hits is not counted because it pertains to the next phase. The movement will travel throughout full phases in one second if the frequency of the sinusoidal motion is localid="1655530542415" .
As a result, the number of times the voltage, current, and power pass by zero are equal to the number of times the voltage, current, and power pass through zero. It is shown as:
localid="1655530545092"
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