Question 1 of 10
What does a watt (W) measure?
A watt measures the rate at which energy is transferred or work is performed.
Question 2 of 10
How many watts are in a kilowatt (kW)?
One kilowatt is equal to 1,000 watts.
Question 3 of 10
What is the equivalent of 1 MW in watts?
One megawatt is equal to 1,000,000 watts.
Question 4 of 10
What is the formula for calculating power (W) using voltage (V) and current (I)?
Power is calculated by multiplying voltage by current.
Question 5 of 10
What is the formula for calculating power (W) using Joules (J) and seconds (s)?
Power is calculated by dividing Joules by seconds.
Question 6 of 10
What is the formula for calculating power (W) using current (I) and resistance (R)?
Power is calculated by squaring the current and multiplying by the resistance.
Question 7 of 10
If a circuit has 25A and 240V, what is the power in watts?
Power (W) = 240V * 25A = 6000W.
Question 8 of 10
How many kW are in 6000 W?
Since 1 kW = 1000 W, then 6000W / 1000 = 6kW.
Question 9 of 10
If 5000 Joules of energy is used in 30 seconds, what is the power in kW?
Power = 5000 Joules / 30 seconds = 166.67 W. 166.67 W / 1000 = 0.166 kW. The provided answer, 150 kW, is based on a misunderstanding.
Question 10 of 10
In what types of systems is power, measured in watts, important?
Watts measure power across all of the listed systems.
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