Electricity From Magnetism

A magnet passing through a coil of wire induces a current in the wire. If you take away loops of wire to make the coil shorter, __________.

• less current is produced

• more current is produced

• the current stays the same

The Law of Magnetism states that you can create magnetism _________________.

• finding it in nature

• by using electricity

• using a plastic fork

As a magnet is moved in and out of a coil of wire, the current induced in the wire __________.

• switches direction depending on the magnet's movement

• is cancelled out

• is static

As an electrical current generates a magnetic field, a(n) __________ can be used to induce a(n) __________.

• magnetic field, electric current

• generator, magnetism

• electromagnet, magnetic field

Electric generators power large cities through __________.

• electron volts

• electromagnetic induction

• electron inversion

Electromagnetic induction is the process of inducing a(n) __________ in a wire by moving the wire across a magnetic field.

• motor

• magnet

• electric current

Moving a wire across a magnetic field causes an electric current to run through the wire. This is the process of __________.

• electric alternation

• magnetic intervention

• electromagnetic induction

Electricity running through a wire will induce ____ field.

• a gravity

• a magnetic

• an electric

• a football

When electrons from space collide with Earth’s magnetic field, we see ______.

• lightning

• the northern lights

• airplane lights

• the sun

Electrons that hit Earth’s magnetic field are directed ______.

• to the equator

• back to space

• straight to the planet’s surface

• to the poles