Physics for IGCSE & O level - Magnets And Currents (Section 8 - No. 2)
Which of the following statements best describes the role of transformers in the power grid?
They convert AC to DC.
They regulate the voltage of DC sources.
They change the voltage levels of AC power.
They store electrical energy.
Vysvětlení
Transformers are fundamental for adjusting the voltage of AC power in the grid.