For resistance V and I vectors are drawn:
Correct answer: C. Such that V leads I
- A. Parallel to each other
- B. Perpendicular to each other
- C. Such that V leads I
- D. None of these
Explanation
The correct option ("parallel to each other") means that in a resistive circuit, the voltage and current vectors are in phase and have the same direction, indicating that they reach their maximum and minimum values simultaneously.
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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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