Y10Electricity Flashcards
Current cannot flow in a circuit that contains any…?
gaps
The particles actually moving in a circuit when current flows are called…?
electrons
The kind of charge electrons have
negative
When electrons move through a cell they gain…?
electrical energy
When electrons move through a light-bulb they lose…?
electrical energy
Electric current is measured in…?
Amperes
Electric current is measured with an…?
ammeter
The direction of flow for conventional current in a circuit
Positive to negative
The direction of electron movement in a circuit
Negative to positive
What do you call a material that allows electric current to flow through itself?
Conductor
What do you call a material that does not allow electric current to flow through itself?
Insulator
How many possible current paths are there in a series circuit?
One
Does a parallel circuit have one or more than one possible current path?
More than one
What do you call the pushing force supplied by a cell, which drives current round a circuit?
Voltage
The unit in which voltage is measured
Volt
The instrument used to measure voltage
Voltmeter
An ammeter is always connected in…?
Series
A voltmeter is always connected in…?
Parallel
Key fact about current in a series circuit
Current is the same at all points in the circuit
Key fact about voltage in a series circuit
Supply Voltage = V₁ + V₂ + V₃ +…
Key fact about current in a parallel circuit
Total Current = I₁ + I₂ + I₃ + …
Key fact about voltage in a parallel circuit
Supply Voltage = V₁ = V₂ = V₃ =…
Are metals electrical conductors or insulators?
Conductors
Are non-metals electrical conductors or insulators?
Insulators
