how electricity works

What is at the center of an atom?

• Orbital shell

• Nucleus

• Proton

• Electron

Which particles are found inside the nucleus?

• Protons only

• Neutrons and Electrons

• Electrons and Protons

• Protons and Neutrons

What charge do electrons have?

• Negative

• No charge

• Positive

• Variable charge

What are atoms with loosely bound electrons in the outer shell called?

• Neutrons

• Protons

• Insulators

• Conductors

What is the role of insulators in electrical circuits?

• To generate electricity

• To allow electrons to move freely

• To increase the flow of electrons

• To restrict where electrons can flow

What happens to electrons in a closed circuit connected to a power source?

• They exit the circuit

• They move in the same direction

• They stop moving

• They move randomly

What does voltage act as in a circuit?

• A pushing force

• A magnetic force

• A resistance

• A blocking force

What is the unit used to measure the flow of electrons?

• Volt

• Amp

• Coulomb

• Watt

What causes resistance in a circuit?

• The length and thickness of the wire

• The flow of protons

• The voltage of the power source

• The speed of electrons

What is the effect of wrapping a wire in a coil and passing current through it?

• It stops the flow of electrons

• It decreases resistance

• It reduces the voltage

• It generates a magnetic field