TRANSFORMERS AND NATIONAL GRIDS
2 marks · EasyDescribe what happens to the voltage and the current when electrical energy passes through a step-down transformer near a town.
(a)[1 mark]
State what happens to the voltage.
(b)[1 mark]
State what happens to the current.
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Show answer
(a) The voltage decreases (is reduced).
(b) The current increases.
Common mistakes: Saying voltage increases
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Correctly states voltage is decreased or reduced.
B1 (b) · 1 mark · Correctly states current increases.
Worked solution
a) When electrical energy passes through a step-down transformer, the voltage is reduced.
b) As the voltage decreases, the current increases.