Alternating current is one which changes in a:
Correct answer: C. Magnitude as well as direction
- A. Magnitude
- B. Direction
- C. Magnitude as well as direction
- D. None of the above
Explanation
Alternating current (AC) changes both in magnitude and direction over time. This means that the strength of the current fluctuates, and the flow of electrons reverses direction periodically, distinguishing AC from direct current (DC).
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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