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An electron is revolving around a proton...

An electron is revolving around a proton in a circular path of diameter 0.1 nm. It produces a magnetic field `14 Wb m^-2` at the proton. The angular speed of the electron is

A

`1.4 xx 10^16 rad s^-1`

B

`4.4 xx 10^16 rad s^-1`

C

`6.4 xx 10^16 rad s^-1`

D

`8.8 xx 10^16 rad s^-1`.

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