Electricity and Magnets

What are the two types of electric charge?

• Positive and Negative

• Positive and Neutral

• Negative and Neutral

• Positive and Electromagnetic

What happens to the magnetic field when the electric current is turned off in an electromagnet?

• The magnetic field remains unchanged.

• The magnetic field becomes stronger.

• The magnetic field disappears when the electric current is turned off.

• The magnetic field reverses direction.

What causes an object to become charged?

• An object becomes charged when it gains or loses protons.

• An object becomes charged when the atoms in the object gain or lose electrons.

• An object becomes charged due to its temperature changes.

• An object becomes charged when it is exposed to magnetic fields.

What is the term for a substance that is not magnetized?

• Unmagnetized

• Demagnetized

• Non-magnetic

• Magnetically neutral

What is the flow of electric charge in a circuit called?

• Electric Current

• Voltage

• Resistance

• Capacitance

What is the role of electrons in electricity?

• Electrons are the particles that carry electric charge and flow through conductors to create electric current.

• Electrons are the particles that absorb electric charge and prevent current flow.

• Electrons are the particles that generate electric charge through friction.

• Electrons are the particles that store electric charge in batteries.

How can you make an electromagnet stronger?

• By using a thicker nail

• By having more wire coils around the nail

• By reducing the voltage

• By using a longer wire

What is an electromagnet?

• A type of magnet that is always magnetic.

• A type of magnet in which the magnetic field is produced by an electric current.

• A permanent magnet made from iron.

• A magnet that can only be used in high temperatures.

What is a circuit?

• A closed loop that allows electric current to flow.

• A device that stores electrical energy.

• A type of electrical resistance.

• A method of measuring voltage.

What is the difference between conductors and insulators?

• Conductors allow electric charge to flow easily, while insulators do not.

• Insulators allow electric charge to flow easily, while conductors do not.

• Both conductors and insulators allow electric charge to flow easily.

• Conductors and insulators are the same in terms of electric charge flow.