A 2.0-C charge moves with a velocity of () m/s and experiences a magnetic force of () N.The x component of the magnetic field is equal to zero.Determine the y component of the magnetic field.
A)(F-3.0
B)+3.0 T
C)+5.0 T
D)(-5.0
E)+6.0 T

Question

A 2.0-C charge moves with a velocity of () m/s and experiences a magnetic force of () N.The x component of the magnetic field is equal to zero.Determine the y component of the magnetic field.  
A)(F-3.0 
B)+3.0 T 
C)+5.0 T 
D)(-5.0 
E)+6.0 T

Quizplus · Accepted Answer

We can use the formula F = qvBsinθ where F is the magnetic force, q is the charge, v is the velocity, B is the magnetic field, and θ is the angle between v and B. Since the x component of the magnetic field is zero, we can assume that B is entirely in the y direction. Therefore, θ = 90° and sinθ = 1. Solving for B, we have B = F/(qv). Substituting the given values, we get B = (2.0 C)( )( )/( ) = +3.0 T. Therefore, the answer is choice B.

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