Electrical power (AQA GCSE Physics): Flashcards

Rate at which electrical energy transfers to other energy types

Watts (W)

1 joule of energy transferred per second

$P = I \times V$

When you know current and voltage

$P = I^2 \times R$

When you know current and resistance

$P = \frac{E}{t}$

When you know energy transferred and time period

Amperes (A)

Volts (V)

More energy is transferred each second