A student places a small compass near a copper wire. When an electric current is passed through the wire, the compass needle deflects. Which statement explains why this deflection occurs?
The current in the wire creates a gravitational field that attracts the compass needle.
The copper wire is a permanent magnetic material that only attracts the compass needle when heated.
The electric current in the wire creates a magnetic field that exerts a force on the compass needle.
The current in the wire induces a static electric charge on the compass needle.
30 exam-style questions on CIE IGCSE Physics 4.5.3a Magnetic effect of a current and its applications. Each one has a worked solution and a mark scheme showing where the marks go.