In a circuit, there is a series connection of an ideal resistor and an ideal capacitor. The conduction current $\text{(in Amperes)}$ through the resistor is $2\sin (t+\pi/2).$ The displacement current $\text{(in Amperes)}$ through the capacitor is ______________.
- $2 \sin (t)$
- $2 \sin (t + \pi)$
- $2 \sin(t + \pi/2)$
- $0$