Question

In electrical appliances, electrical energy is converted into another form of energy. However, some energy is wasted. For a light globe state: (a) the useful energy that is produced and (b) the non-useful energy that is produced

Answer 1

Answer:

Sankey diagrams are named after the Irish Captain Matthew Sankey, who first used this type of diagram in 1898 in a publication on the energy efficiency of a steam engine.

The width of the arrows tell us something in these diagrams. The input energy is the width of the original arrow. The width of both the output energy arrows (useful and wasted) add up to the width of the input arrow.  Think back to what you learned about energy within systems in Chapter 2.

Whenever we use an appliance or a machine we are transferring energy from one object to another. Not all the energy is transferred where we want it, a lot of it is transferred to the surroundings where it does not help us achieve our aims. The energy which is transferred to the surroundings is "wasted".

Useful and wasted energy

° Sankey diagram

° input

° output

Explanation:

Answer 2

Answer:

useful energy that is produced is the light energy and alone useful energy that is produced is the heat energy because it leads to the loss of electricity in the form of heat which is not needed

Explanation:

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