A straight wire remains at rest between the poles of a magnet. It is positioned perpendicular to the magnetic field. Which action would not induce an e.m.f. in the wire?
- Amoving the magnet up towards the top of the page and the wire down towards the bottom of the page
- Bmoving the magnet up towards the top of the page only
- Cmoving the wire and the magnet up towards the top of the page at the same speed
- Dmoving the wire down towards the bottom of the page only