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Electrons move at right angles to a magn...

Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^(7)m//s`. If the specific charge of the electron is `1.7xx10^(11)C//kg`. The radius of the circular path will be

A

2.9 cm

B

3.9 cm

C

2.35 cm

D

3 cm

Text Solution

Verified by Experts

The correct Answer is:
C
`r = (mv)/(qB) = (v)/((q/m) B) = (6 xx 10^(7))/(1 xx 10^(11) xx 1.5 xx 10^(-2)) = 2.35`cm
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