What is power?
Answer and explanation
Correct answer: B. The rate of energy transfer
- Step 1: Power is measured in watts. Step 2. 1 W is 1 J per second. Answer: The rate of energy transfer. Why not the others: The others describe other quantities.
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More Energy and Power questions
- What is the unit of energy?
- A 2 kg mass is lifted through 3 m. What is the gain in gravitational potential energy? (g = 10 N/kg)
- A 4 kg object moves at 3 m/s. What is its kinetic energy?
- A motor transfers 500 J of energy and 400 J is useful. What is the efficiency?
- A 60 W lamp is on for 10 minutes. How much energy does it transfer?
- Which energy resource is renewable?