Calculate the speed of an electron if it travels in a circular path of – McqOptions

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1.	Calculate the speed of an electron if it travels in a circular path of radius 50 cm in a magnetic field of 5 10^-3 T.
A.	440 10<sup>7</sup> m/s
B.	4 10<sup>7</sup> m/s
C.	44 10<sup>7</sup> m/s
D.	0.4 10<sup>7</sup> m/s
Answer» D. 0.4 10<sup>7</sup> m/s

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