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An electron moving with a speed of 10^(8...

An electron moving with a speed of `10^(8)` m/s enters a magnetic field of `5 xx10^(-3)` T in a direction of perpendicular to field. Then the radius of the path will be

A

1.2 m

B

0.43 m

C

0.113 m

D

0.54 m

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