The d.c. motor

4.5.5

What the syllabus asks of you

Know that a current-carrying coil in a magnetic 2 Describe the operation of an electric motor, field may experience a turning effect and that including the action of a split-ring commutator the turning effect is increased by increasing: and brushes (a) the number of turns on the coil (b) the current (c) the strength of the magnetic field

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Chapter 4: The d.c. motor

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Every question on The d.c. motor, untimed, marked as you go.

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