ELECTRIC MOTORS AND ELECTROMAGNETIC INDUCTION

1 mark · Normal

Which change will NOT increase the force experienced by a wire carrying a current in a magnetic field?

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Correct option: Reducing the length of the wire in the field

Common mistakes: Choosing 'Reversing the direction of the current'

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Marking points

B1 · 1 mark · Correct option selected.

Worked solution

Only reducing the length of the wire in the field will NOT increase the force. Force increases with stronger field, higher current, but reversing current only reverses the direction, not the size.