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If an electron is moving with velocity v...

If an electron is moving with velocity v produces a magnetic field `vecB`, then

A

the direction of field `vecB` will be same as the direction of velocity `vecv.`

B

the direction of field `vecB` will be opposite to the direction of velocity `vecv.`

C

the direction of field `vecB` will be perpendicular to the direction of velocity `vecv.`

D

the direction of field `vecB` does not depend upon the direction of velocity `vecv.`

Text Solution

Verified by Experts

The correct Answer is:
C
According to Biot-Savart's law, the magnetic field
`vecB=(mu_(0))/(4pi).(q(vecv xx vecF))/(r^(3))`
The direction of `vecB` will be along `vecv xx vecr` i.e., perpendicular to the plane containing `vecv` and vecr`.
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