Phasors: an Ac Source of Period T and Maximum Voltage

question 24

Multiple Choice

Phasors: An ac source of period T and maximum voltage V is connected to a single unknown ideal element that is either a resistor, and inductor, or a capacitor. At time t = 0 the voltage is zero. At time t = T/4 the current in the unknown element is equal to zero, and at time t = T/2 the current is I = -I_max, where I_max is the current amplitude. What is the unknown element?

• A) a resistor
• B) an inductor
• C) a capacitor
• D) an inductor or a capacitor

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