Physics for IGCSE & O level - Magnets And Currents (Section 7 - No. 9)
What are the two main types of transformers?
Step-up and DC transformers
Step-down and AC transformers
Step-up and step-down transformers
AC and DC transformers
Vysvětlení
Transformers are classified based on their function in changing the voltage, either increasing it (step-up) or decreasing it (step-down).