Electromagnetic Forces Review Crossword

3. A solenoid with a ferromagnetic core that produces a stronger magnetic field than a solenoid alone.
4. A device whose needle changes direction when near a current-carrying wire because of a magnetic field.
7. A substance that becomes a magnet when exposed to a magnetic field (iron, nickel, cobalt).
8. A magnetic field produced by current that disappears when the current is turned off.
10. A method to determine magnetic field direction by pointing the thumb in the direction of current and the fingers curl in the direction of the magnetic field.
11. Moving electricity that produces a magnetic field when it flows through a wire.
13. An area around a wire or magnet that has direction and strength and can be turned on or off by controlling current.
15. Winding coils closer together increases the magnetic field strength.

1. A wire with electricity flowing through it that produces a magnetic field around it.
2. The scientist who discovered that an electric current produces a magnetic field when a compass needle changed direction near a wire.
5. The strength of a magnetic field increases when current increases and decreases when current decreases.
6. A coil of wire with a current running through it that strengthens the magnetic field in the center and has north and south poles.
9. The relationship between electricity and magnetism.
12. The direction of a magnetic field depends on the direction of the electric current.
14. A wire shaped into a loop that increases the strength of the magnetic field inside the loop.