Physics for IGCSE & O level - Magnets And Currents (Section 11 - No. 33)
What is the relationship between voltage, current, and power in a transformer?
Power increases with both voltage and current
Power decreases with voltage and increases with current
Power decreases with current and increases with voltage
Power remains constant if there is no energy loss
คำอธิบาย
In an ideal transformer, power in equals power out.