CAPE Physics Unit 2 · 2008 (T&T) · Paper 1 · Question Q20
Item 20 refers to the following graph which represents a sinusoidal alternating current against time as drawn below. The equation to represent this alternating current is
- (A)
I = 10\cos 100\pi t - (B)
I = 10\cos 50\pi t - (C)
I = 10\cos 80\pi t - (D)
I = 20\cos 200\pi t
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