PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
In a purely capacitive AC circuit, the current reaches its maximum exactly one-quarter of a cycle before the voltage attains its maximum. Which statement best describes their phase relationship?
(a) Voltage leads current by 90∘
(b) Current leads voltage by 45∘
(c) Current leads voltage by 90∘
(d) Current and voltage are in phase