A student investigates the magnetic field around a straight copper wire carrying an electric current.
Which row in the table shows the conditions that result in the greatest magnetic field strength?
| Distance from the wire | Current in the wire | |
|---|---|---|
| A | Large | Large |
| B | Small | Small |
| C | Large | Small |
| D | Small | Large |
Row A
Row B
Row C
Row D
30 exam-style questions on Edexcel GCSE Physics 12.1 Magnets and magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.