How Electricity Works

What are the three particles that make up an atom?

• Protons, Atoms, Molecules

• Atoms, Neutrons, Electrons

• Neutrons, Protons, Electrons

• Protons, Electrons, Molecules

Where are the electrons located in an atom?

• Outside the nucleus in orbital shells

• Attached to the protons

• In the valence shell

• Inside the nucleus

What is the charge of a neutron?

• No charge

• Varies with the atom

• Negative

• Positive

What materials are known as conductors?

• Wood and plastic

• Ceramics and porcelain

• Most metals

• Glass and rubber

What is the function of a capacitor?

• To increase voltage

• To store and release electrons

• To convert AC to DC

• To generate electricity

What does a volt measure?

• The resistance in a circuit

• The flow of electrons

• The number of electrons in a coulomb

• The pushing force of electrons within a circuit

What is resistance?

• A measurement of voltage

• The flow of electrons in a circuit

• The amount of current passing through

• A restriction to the flow of electrons

What happens when a wire is wrapped in a coil and current passes through it?

• It becomes an insulator

• It generates a magnetic field

• It converts AC to DC

• It decreases the flow of electrons

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What is the difference between AC and DC current?

• AC is used in batteries, while DC is used in home sockets

• AC flows in one direction, while DC flows back and forth

• There is no difference

• AC flows back and forth, while DC flows in one direction

How can the voltage in a transformer be changed?

• By switching the current from AC to DC

• By altering the flow of electrons

• By changing the amount of coils on either side

• By changing the type of material in the coils