Question Constellation Sign up for free AQA · GCSE · Physics · Higher
Energy Power Time Equation
Write down the equation which links energy (E), power (P) and time (t).
Write your answer first. You can study the marking guidance whenever you need it.
Study the marking See what earns credit and compare it with a full-mark answer.
Marking points
- 1 States E = P × t (or the correct word equation).
Full-mark answer
Why this answer loses marks
I wrote P = E × t.
This uses the wrong arrangement. Power is energy transferred per unit time; then rearrange the relationship into the symbols requested.