Electrical power (AQA GCSE Physics Combined Science): Flashcards
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Practise the cards
15 cards from this deck
What does electrical power measure?
What does electrical power measure?
How fast electrical energy changes into other types of energy
Unit of electrical power
Unit of electrical power
Watts (W)
Definition of one watt
Definition of one watt
One joule of energy transfers every second
Power equation using current and voltage
Power equation using current and voltage
When to use
When to use
When you know current and voltage
Power equation using current and resistance
Power equation using current and resistance
When to use
When to use
When you know current and resistance
Power equation using energy and time
Power equation using energy and time
When to use
When to use
When you know energy transferred over a certain time
Unit for current
Unit for current
Amps (A)
Unit for potential difference
Unit for potential difference
Volts (V)
Unit for resistance
Unit for resistance
Ohms (Ω)
Energy transfer of 1 joule per second equals
Energy transfer of 1 joule per second equals
Power of 1 watt
What means in
What means in
Current multiplied by itself
Key thing to check when using power equations
Key thing to check when using power equations
Units match the equation you're using