Physics for IGCSE & O level - Magnets And Currents (Section 5 - No. 6)
What is the main reason for using step-up transformers in the transmission of electricity over long distances?
To increase the current.
To decrease the voltage.
To reduce energy losses.
To increase the frequency.
Forklaring
Using step-up transformers, energy is transmitted at high voltage and low current, which reduces energy losses due to the resistance of the transmission lines.