CAPE Physics Unit 2 · 2010 · Paper 1 · Question Q17

The equation to represent the alternating current is

1. (A)I = 10 \cos 100\pi t
2. (B)I = 10 \cos 50\pi t
3. (C)I = 10 \cos 80\pi t
4. (D)I = 20 \cos 200\pi t

This question uses a figure or table from the paper — you'll see it when you practise.