2
lesson pretestMultiple Choice

Pretest

Question 2 • Physics

What must be known to determine the direction of the magnetic force on a charge? Choose three correct answers.

Answer
A
the type of the charge
B
the velocity of the charge
C
the amount of the charge
D
the strength of the magnetic field
E
the direction of the magnetic field

Explanation

The magnetic force direction follows the rule for the cross product of velocity and magnetic field. You need the charge type to know whether the force follows that direction or is reversed, the charge’s velocity, and the magnetic field’s direction. The charge’s amount and the field’s strength affect the force’s magnitude, not its direction.

AI-written and checked against the verified answer.

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