Electrical power
1 mark · Easy| Bulb | Power (W) |
|---|---|
| A | 40 |
| B | 75 |
| C | 100 |
| D | 25 |
Which bulb transfers the least electrical energy every second?
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D
Also accept: D; bulb D
Common mistakes: choosing highest power
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Marking points
B1 · 1 mark · Bulb with lowest power selected: D
Worked solution
Bulb D has the lowest power (25 W), so it transfers the least energy each second.