O-LevelPhysicsMagnetism5054/12 · May/June 2017 · Q361 Mark
What is the effect of using a split-ring commutator?
Ait ensures that the current is the same in all parts of a series circuit
Bit generates an alternating electric current
Cit produces a force on a current-carrying coil
Dit reverses the direction of the current in the coil of a motor
✓ Correct answer
D: it reverses the direction of the current in the coil of a motor
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