(Answered) A proton is accelerated through a potential difference of

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A proton is accelerated through a potential difference of 10 000V and then enters a uniform magnetic field as shown below.

a) Sketch the path that the proton will follow. How much work is done on the proton once it enters the field?

b) If the strength of the B-field is 0.2T,what is the radius of the path? (ans: 7.2 cm)

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