CAPE Physics Unit 2 · 2007 (Specimen) · Paper 1 · Question Q11

A hollow solenoid has 100\text{ turns} in a length of 0.5\text{ m}. If a steady current of 2\text{ A} flows in the solenoid as shown in the diagram, what is the magnitude and direction of the flux density in the middle?

1. (A)1.3 \times 10^{-4}\text{ T} to the left
2. (B)5.0 \times 10^{-4}\text{ T} to the left
3. (C)1.3 \times 10^{-4}\text{ T} to the right
4. (D)5.0 \times 10^{-4}\text{ T} to the right

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