Exam-style question
Try this first
A light bulb uses 240 J of energy in 2 minutes. Calculate the power consumed by the light bulb.
Model answer
What a good answer should say
- The power consumed by the light bulb is 2 W.
Explanation
Why this works
This question assesses the ability to calculate power from energy and time. The formula used is P = E / t.
By converting time to seconds and substituting the values, we can determine the power.
Common mistake
No common mistake is linked to this question yet.