(a)[3]
Explain why electrical power is transmitted at a voltage of 400000 V rather than 22000 V.
(b)[5]
Calculate the current at the input of the transformer.
Physics 0625 · IGCSE · Electrical quantities
Electrical quantities — practice question
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A higher voltage gives a smaller current for the same power” …
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