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nokia8650
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See question below:
http://img140.imageshack.us/img140/479/30680788kr3.th.jpg
In order to calculate the EMF, the markscheme using the formula "E=Blv", the markscheme uses the linear speed of point M. Can someone please explain why this is the case - I understand the derivation of E=Blv, just not why the linear speed at M is used.
I used a different method (I calculated the area/second and multiplied it by B), however I would be interested to know how the method above manifests itself.
Thanks
http://img140.imageshack.us/img140/479/30680788kr3.th.jpg
In order to calculate the EMF, the markscheme using the formula "E=Blv", the markscheme uses the linear speed of point M. Can someone please explain why this is the case - I understand the derivation of E=Blv, just not why the linear speed at M is used.
I used a different method (I calculated the area/second and multiplied it by B), however I would be interested to know how the method above manifests itself.
Thanks
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