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8 Energy – forces doing work

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Question 76
F

A kettle operates at 2.0 kW for 3.0 minutes3.0\ \mathrm{minutes}3.0 minutes. A charger operates at 20 W for 4.0 hours4.0\ \mathrm{hours}4.0 hours. Which comparison of total energy transferred is correct?

[1]
A

The kettle transfers 72 kJ72\ \mathrm{kJ}72 kJ more.

B

The charger transfers 280 kJ280\ \mathrm{kJ}280 kJ more.

C

The kettle transfers 280 kJ280\ \mathrm{kJ}280 kJ more.

D

The charger transfers 72 kJ72\ \mathrm{kJ}72 kJ more.

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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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