Formative 1.7: Current in Series Circuits

What is the same for each element in a series circuit?

• Voltage

• Current

• Resistance

• Power

What is the term for the average speed of charge travel in a wire?

• Drift speed

• Flow speed

• Circuit speed

• Electron speed

How small is the drift speed in the copper wire example given?

• 3 mm/sec

• 0.3 mm/sec

• 30 mm/sec

• 0.03 mm/sec

What speed does the 'command to move' travel at for electrons?

• 300,000 km/sec

• 1600 km/sec

• 0.3 mm/sec

• 300 km/sec

What analogy is used to explain the drift speed of electrons?

• A car on a highway

• Water in a garden hose

• A train on a track

• Wind blowing through trees

What is an example of a device connected in series in electrical circuits?

• Light bulb

• Fuse

• Battery

• Resistor

What happens when a large current flows through a fuse?

• It lights up

• It cools down

• It "blows"

• It changes color

What is a fuse typically made of?

• Plastic

• Metal

• Glass or ceramic tube

• Rubber

What is the result of a short circuit in terms of a fuse?

• The fuse cools down

• The fuse "blows"

• The fuse lights up

• The fuse changes color

What is the main difference between a fuse and a circuit breaker?

• A fuse can be reset

• A circuit breaker can be reset

• A fuse increases current

• A circuit breaker decreases voltage