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HSC Physics Predictions / Thoughts (5 Viewers)

Xanthi

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At the start, the charges in PQ are moving horizontally in the same direction as the magnetic field, therefore no magnetic force is generated. After 1/4 rotation they moved vertically perpendicular to field. So I picked A?
 

aaaaaaaasa

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At the start, the charges in PQ are moving horizontally in the same direction as the magnetic field, therefore no magnetic force is generated. After 1/4 rotation they moved vertically perpendicular to field. So I picked A?
I chose A aswell, not sure if its correct...
 

Maurice69

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19 C is right though! Its not cutting any field lines because its parallel to them all - so how can an emf be induced? It can't
 

Xanthi

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19 C is right though! Its not cutting any field lines because its parallel to them all - so how can an emf be induced? It can't
The motion of the charges is important, after 1/4 rotation it is perpendicular to field
 

ItzZoni

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A lot of my friends picked C for 19 but i did B. Honestly not sure what the real answer is
 

Xanthi

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Magnitude shouldn't be constant? Ball slows down as it moves up so normal force changes?
 

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