Energy transfer for gcse homework

[crofty1984]

andymc said:

Is it not 50x300?

I'm well out of practice

Yes. Assuming 100% efficient transfer.

[ATG]

crofty1984 said:

andymc said:

Is it not 50x300?

I'm well out of practice

Yes. Assuming 100% efficient transfer.

Electric heaters are 100% efficient.

[Antonia]

Try and encourage your daughter to approach the questions in the following way:
What do I know?
w =
s =
What do I need to know?
j
Which formular links these things?

j = w * s

It is an approach that works for all of these formular based questions in science and maths. She might need help rearranging the formulas.