Question 1

What is an erg?

Accepted Answer

CGS unit of energy. 1 erg = 10⁻⁷ joules. Very small—used in physics and astronomy.

Question 2

How do you convert ergs to joules?

Accepted Answer

Divide ergs by 10 million. Example: 10⁸ ergs = 10 joules.

Question 3

What's the difference between energy and power?

Accepted Answer

Energy (joules, kWh) is total work done. Power (watts) is energy per unit time. A 100W bulb for 10 hours = 1 kWh of energy.

Question 4

Why are there so many energy units?

Accepted Answer

Different fields developed their own: BTU for heating, calories for nutrition, joules for physics, kWh for electricity billing.

Ergs to Joules Energy Converter - Free Online Tool

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