I need help, I calculated got 11.5V is that correct?

ra
2

Task

A notebook charger transforms U = 230 V mains voltage to a charging voltage U for connection to the notebook. The primary coil has n = 2000 turns. The secondary coil has n2 = 100 turns. How high is the secondary voltage Uz of this transformer? Calculate!

I need help, I calculated got 11.5V is that correct
He

In a world without transformation losses, your calculation is correct.

ay

Correctly calculated. Only that notebooks today have all switching power supplies and no classic transformers…

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