TRANSFORMERS AND NATIONAL GRIDS

1 mark · Easy

State the purpose of a step-down transformer in the National Grid.

Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.

Show answer

To reduce (step down) the voltage of electricity for safe use in homes and businesses.

Also accept: To decrease the high transmission voltage to a lower value suitable for consumers; To lower the voltage before distribution

Common mistakes: To increase voltage; Used to transmit electricity over long distances

Show mark scheme and worked solution

Marking points

B1 · 1 mark · Correct statement that a step-down transformer reduces (steps down) voltage for consumer use.

Worked solution

The purpose of a step-down transformer is to reduce the voltage to a safer level before it enters homes and businesses.