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Question 20N.1A.SL.TZ0.33

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1A.SL.TZ0.33
Level SL Paper 1A Time zone TZ0
Command term Question number 33 Adapted from N/A
33.
[Maximum mark: 1]
20N.1A.SL.TZ0.33

Why are high voltages and low currents used when electricity is transmitted over long distances?

A.  Cables can be closer to the ground.

B.  Electrons have a greater drift speed.

C.  Energy losses are reduced.

D.  Resistance of the power lines is reduced.

[1]

Markscheme

C

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