Question

D. the direction of field Bº does
not depend upon the
direction of velocity v
(44. If an electron is moving with velocity vº produces a magnetic field B,
then
A. the direction of field B will
be same as the direction of
velocity v
B. the direction of field B will
be opposite to the direction
of velocity v
C. the direction of field B will
be perpendicular to the
direction of velocity v

Answer 1

Explanation:

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If an electron is moving with ...

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

Updated On: 4-4-2020

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Answer

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Text Solution

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A

the direction of field B→ will be same as the direction of velocity v→.

B

the direction of field B→ will be opposite to the direction of velocity v→.

C

the direction of field B→ will be perpendicular to the direction of velocity v→.

D

the direction of field B→ does not depend upon the direction of velocity v→.

Answer

C

Solution

According to Biot-Savart's law, the magnetic field

B→=μ04π.q(v→×F→)r3

The direction of B→ will be along v→×r→ i.e., perpendicular to the plane containing v→ and vecr`