Question

A particle of mass m and charge q moving with velocity v describe a circular path of radius r when subjected to uniform transferred magnetic field of induction b the work done by feel when particle complete circuit

Answer 1

The work done by field when particle completes one circuit is zero.

Explanation:

Mass of particle = m

Charge of particle = q

Velocity of particle = v

• The work done formula is:

dW = F.ds

dW = Fdscosθ

• Now we know tht the angl between force and ds vectro is always 90°

Thus

dW = Fdscos(90°)        [ Since cos(90°) = 0]

dW = 0

• Magnetic field do not work in this case.

Thus the work done by field when particle completes one circuit is zero.

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