5
QuizMultiple Choice

Magnetic Field and Force — Quiz

Question 5 • Physics

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field?

Answer
A
cap f is equal to absolute value of q cap b sine theta
B
cap f is equal to absolute value of q cap b cosine theta
C
cap f is equal to absolute value of q v cap b sine theta
D
cap f is equal to absolute value of q v cap b cosine theta

Explanation

The magnetic force on a moving charge has magnitude F = |q|vB sin θ, where q is the charge, v is its speed, B is the magnetic field strength, and θ is the angle between the velocity and the field. The sine accounts for the part of the motion perpendicular to the magnetic field. Therefore, the correct choice is “F = |qvB sin θ|.”

AI-written and checked against the verified answer.

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