Understanding Energy Transfers with Sankey Diagrams

The video tutorial explores how energy transfers are represented using diagrams, specifically focusing on Sankey diagrams. It begins with an introduction to energy transfers, using a car engine as an example to illustrate how chemical energy is converted into kinetic, thermal, and sound energy. The tutorial then explains how Sankey diagrams visually represent these energy transfers, with the width of arrows indicating the amount of energy transferred. A detailed example using a light bulb demonstrates how to calculate energy transfers, highlighting the conversion of electrical energy into light and thermal energy.

In the example of the light bulb, how is the electrical energy supplied represented in the Sankey diagram?

Calculate the amount of energy transferred as light from the light bulb based on the provided information.

What is the total amount of thermal energy produced by the light bulb when it is switched on?