If V =Vo sin ωt and ω =2π/T , the value of alternating voltage V when t=3T/4 is:
Correct answer: A. -Vo
- A. -Vo
- B. Vo
- C. Vo=0
- D. None of these
Explanation
Explanation is provided in picture below.
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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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