Electrons Are Circulating in a Cyclotron in a Uniform Magnetic

Electrons are circulating in a cyclotron in a uniform magnetic field of 1.1 T.One can think of these circulating electrons as a circular current loop with the same diameter.The magnetic field is then rapidly increased at a constant rate of 2.5 T/s.If the magnitude of the induced electric field causing the electrons to increase their speed 25 ms after the magnetic field begins increasing is 0.73 V/m,what is the diameter of the electrons' orbit? This is the basis for accelerating electrons in a betatron.

A) 1.17 m
B) 0.29 m
C) 1.03 m
D) 0.58 m
E) 1.45 m

Correct Answer:

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