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GCSE Physics - Tranformers

The power station produces a current of 22KA
If the transformer is 97 %efficient, what will the output current onto the 230 Kv National grid be?

I got this question on a HW task and don't understand it. Can someone pls explain??
(edited 5 years ago)
I think you need to know the power station voltage too?
Efficiency = power out / power in (x100)
power = voltage x current
Original post by lk_xx
The power station produces a current of 22KA
If the transformer is 97 %efficient, what will the output current onto the 230 Kv National grid be?

I got this question on a HW task and don't understand it. Can someone pls explain??

This question is not clear. We will need either the output voltage or input voltage to solve the question.

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