Chapter13: Electromagnetic Induction
Section: Chapter Questions
Problem 71AP: The magnetic field between the poles of a horseshoe electromagnet is uniform and has a cylindrical...
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Question
![Figure shows a coil wound around a soft iron bar XY. (a) State the polarity at the end X
and Y as the switch is pressed. (b) Suggest one way of increasing the strength of the
electromagnet so formed.
Coil
X
Y
Switch Battery
Rheostat](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90355efb-e6c3-40a4-afeb-000830e010e5%2Fffe2a7ce-024b-4f1a-8291-9b494d6d59a4%2Fg4uobs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Figure shows a coil wound around a soft iron bar XY. (a) State the polarity at the end X
and Y as the switch is pressed. (b) Suggest one way of increasing the strength of the
electromagnet so formed.
Coil
X
Y
Switch Battery
Rheostat
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