Question

In an $AC$ series circuit, the instantaneous current is zero when the instantaneous voltage is maximum.Connected to the source may be a.

• A. pure inductor
• B. pure capacitor
• C. pure resistor
• D. combination of a capacitor and an inductor

Answer 1

Answer: (A), (B)

The correct options are
A pure inductor
B pure capacitor

Since in inductor current lags voltage by $\pi /2$
and in a capacitor current leads voltage by $\pi /2$
therefore in both the cases whenever current through them is zero. then voltages across them can be either maximum or minimum.