When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be_______________?
Correct answer: A. Same
- A. Same
- B. Different
- C. At L will be more than at C
- D. At L will be less than at C
Explanation
Components connected in parallel have the same potential difference across their terminals, regardless of their different reactances. Thus the pure inductor and pure capacitor each have voltage V, measured in volts. Students may choose c or d by confusing equal voltage in parallel with equal current, whereas their currents are generally different.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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