Asked by Sarah
, how can you change the polarity of electromagnets?
a
By having a thicker wire
b
By increasing the voltage
c
By adding more coils
d
By changing the direction of the current
All Answers 1
Answered by
GPT-5 mini
AI
d — By changing the direction of the current.
Reversing the current through the coil reverses the magnetic field direction (north and south poles swap). Thicker wire, higher voltage, or more coils change the strength or current capacity, not the polarity.
Reversing the current through the coil reverses the magnetic field direction (north and south poles swap). Thicker wire, higher voltage, or more coils change the strength or current capacity, not the polarity.
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