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Power Formula

P = W / t

📖 What is Power?

Power is the rate at which work is done or energy is transferred. Two engines can do the same work, but the more powerful one does it faster. Power is measured in Watts (W), where 1 W = 1 J/s.

P = W / t
P = I × V    (electrical power)

🔤 What Each Variable Means

P
Power (Watts, W)The rate of energy transfer. 1 W = 1 J/s
W
Work / Energy (Joules, J)The total energy transferred
t
Time (seconds, s)The time taken to do the work

📝 Step-by-Step Example

A machine does 600 J of work in 10 seconds. What is its power?

1
Identify valuesW = 600 J    t = 10 s
2
Apply the formulaP = W / t = 600 / 10
✓
Answer: P = 60 W

🧮 Interactive Calculator

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🔗 Related

🎯 Quick Fact

The unit Watt is named after James Watt, the Scottish inventor who improved the steam engine in the 1760s.