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OpenStudy (anonymous):

What can be increased in order to increase the magnetic field? A)The size of the iron core B)The magnetic poles C)The wire resistance D)The current

OpenStudy (anonymous):

What kind of system are you talking about? But at a glance I would have to say the current.

OpenStudy (anonymous):

I would prefer to say that The magnetic poles & The current both play important role in increasing megnetic field.

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