A wire is moved through the gap between the poles of a magnet. A voltmeter measures the electromotive force (e.m.f.) induced between the two ends of the wire. What produces the greatest reading on the voltmeter?
- Aspeed of wire: fast; strength of magnet: weak
- Bspeed of wire: fast; strength of magnet: strong
- Cspeed of wire: slow; strength of magnet: weak
- Dspeed of wire: slow; strength of magnet: strong