GENERATORS

2 marks · Easy

List two ways to increase the current produced in a wire when it is moved across a magnetic field.

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Move the wire more quickly; Use a stronger magnet.

Also accept: Increase the speed of movement;; Increase the strength of the magnetic field;; Use a coil instead of a straight wire;; Increase the number of turns in the coil (if a coil is mentioned)

Common mistakes: Increase resistance in the circuit

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Marking points

B1 · 1 mark · States that increasing the speed of the wire increases the induced current

B2 · 1 mark · States that using a stronger magnet increases the induced current

Worked solution

You can increase the current by (1) moving the wire more quickly, and (2) using a stronger magnet.