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Grade: 12

                        

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

2 years ago

Answers : (2)

Saurabh Koranglekar
askIITians Faculty
10233 Points
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8 months ago
Vikas TU
13786 Points
							
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.
8 months ago
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