Saavas Topic 6: Electricity and Magnetism

The motion of electrons is called

• power

• induction

• current

• amps

Positive electric charges

• attract both positive charges and negative charges.

• repel both positive charges and negative charges.

• attract positive charges and repel negative charges

• repel positive charges and attract negative charges.

An electric current in a metal consists of moving

• protons

• neutrons

• quarks

• electrons

Materials that do not allow electrons to move are called

• conductors

• insulators

• Ohmmeters

• Voltmeters

You can increase the strength of an electromagnet are increasing the current, adding iron to the core, and .....

• increasing the number of coils on the magnet

• Decreasing the number of coils on the magnet

• Dividing the number of coil

A device that protects a circuit by from having too much current is called a

• switch

• short

• fuse or breaker

• resistor

How could you make an electromagnets with materials in your home?

• Connect a light bulb to a magnet and turn it on.
• Use aluminum foil to create a coil and place it in water.
• Attach a battery directly to a piece of iron without any wire.
• Wrap insulated copper wire around a nail and connect the ends to a battery.

How are magnets oriented when they attract each other?

• Magnets attract only when they are touching.
• Like poles face each other (north to north).
• Opposite poles face each other (north to south).
• Magnets repel each other regardless of orientation.

A north pole of a magnet is attracted to a ...

• South pole of a magnet

• North pole of a magnet

the relationship between voltage, current, and resistance is called __________ Law

• Newton's

• Murphys

• Ohm's

• Faraday's