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write in vector form the mathematical expressio for force expierenced by a point electric charge “q” moving with velocity v in a uniform magnetic field b.
under what conditions is this force

(a) maximum and
(b) minimum

raza

7 Years agoGrade 12

2 Answers

Saurabh Koranglekar

6 Years ago

Vikas TU

6 Years ago

Dear student

For a point electric charge,

F=q(V(vector) × B(vector)).

or

F=qVBsin theta. (scalar)

When sin theta is 1, force is maximum.

F=qVB.

When sin theta is 0. force minimum=0.

Work done by this force = Increase in Kinetic energy
w = F.ds = Fs Cos90
w=0
Hence increase in KE is zero.

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