Physics for IGCSE & O level - Magnets And Currents (Section 4 - No. 2)
What is a disadvantage of using a DC power supply with an AC transformer?
The transformer won't work effectively.
The transformer will overheat.
Both a and b.
None of the above.
Объяснение
A DC power supply with an AC transformer will make the transformer be ineffective or overheat.