Question 1 (20 marks) a) Describe the responses of il, V, and VR when the switch is closed in the circuit in Figure Q1.
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Question 1 (20 marks) a) Describe the responses of il, V, and VR when the switch is closed in the circuit in Figure Q1.
Question 1 (20 marks) a) Describe the responses of il, V, and VR when the switch is closed in the circuit in Figure Q1. + + 끝 Figure Q1 (10 marks) b) Elaborate (with the aid of mathematical derivation) the reason the AC current of a capacitor leads its voltage by 90°. (10 marks)