The magnitude of alternating voltage is:
Correct answer: D. Does not remain the same
- A. Always decreases
- B. Always increases
- C. Always remains the same
- D. Does not remain the same
Explanation
The correct option, "Does Not Remain the Same," indicates that the magnitude of alternating voltage changes over time, fluctuating between positive and negative peaks in a sinusoidal manner.
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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.
Practise Alternating Current
592 free Alternating Current MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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The alternating voltage or current is actually measured by:
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The maximum current Io passing through a resistance R connected with an alternating voltage source Vo is given by: