CAPE Physics Unit 2 · 2017 · Paper 1 · Question Q10

Item 10 refers to the following diagram of a wire of length 30\text{ cm} in a magnetic field of strength 3.5\text{ mT}, which makes an angle of 60^\circ with the field. [Diagram showing magnetic field B and a wire oriented at 60^\circ to the field] If the wire is carrying a current of 2.5\text{ A}, what is the magnitude of the force on the wire?

1. (A)0.0023\text{ N}
2. (B)0.13\text{ N}
3. (C)1.3\text{ N}
4. (D)2.3\text{ N}

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