When a current flows in a coil of wire, there exists a magnetic field inside the coil. Which of the following would NOT make the magnetic field inside the coil stronger?
A. increase the current in the coil of wire
B. put an iron core inside the coil
C. reverse the direction of the current
D. squeeze the loops of wire closer together
A. increase the current in the coil of wire
B. put an iron core inside the coil
C. reverse the direction of the current
D. squeeze the loops of wire closer together
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> C. Reverse the direction of the current.
Reversing the direction of a current doesn’t make the magnetic field stronger instead the magnetic poles gets reversed.
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