Energy Units and Conversions

The video tutorial explains the relationship between the SI unit of energy, Joule, and the commercial unit, kilowatt hour. It details the conversion process from kilowatt hour to Joules, showing that 1 kilowatt hour equals 3.6 million Joules. The tutorial provides a step-by-step calculation, emphasizing the importance of understanding energy units in both scientific and commercial contexts.

What is the main topic discussed in the video?

• The importance of renewable energy

• The relationship between commercial and SI units of energy

• The history of energy units

• The definition of power

What is the SI unit of energy?

• Calorie

• Joule

• Kilowatt-hour

• Watt

What is the commercial unit of energy?

• Watt

• Newton

• Kilowatt-hour

• Joule

How many watts are in one kilowatt?

• 2000 watts

• 1000 watts

• 500 watts

• 100 watts

How many seconds are there in one hour?

• 7200 seconds

• 3600 seconds

• 1800 seconds

• 600 seconds

What is the formula to convert kilowatt-hours to joules?

• 1 kWh = 3.6 x 10^12 joules

• 1 kWh = 3.6 x 10^9 joules

• 1 kWh = 3.6 x 10^6 joules

• 1 kWh = 3.6 x 10^3 joules

What happens to the seconds in the conversion process?

• They are multiplied

• They cancel out

• They are added

• They are divided

What is the final relationship between kilowatt-hours and joules?

• 1 kWh = 3.6 x 10^8 joules

• 1 kWh = 3.6 x 10^5 joules

• 1 kWh = 3.6 x 10^7 joules

• 1 kWh = 3.6 x 10^6 joules