A2L Item 198

• Description: Indicate how a negative charge should move in a magnetic field to have a force in the direction specified.
• Goal: Honing the right hand rule
• Source: UMPERG-283 Mag Force
• Keywords: Electromagnetism, Forces, Magnetic Field, Right-Hand Rule

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The question for students:

In a region of space there is a uniform magnetic field pointing in the positive z direction. In what direction should a negative charge move to experience a force in the positive x direction?

1. In the positive z direction
2. In the negative z direction
3. In the positive x direction
4. In the negative x direction
5. In the positive y direction
6. In the negative y direction
7. It can move in any direction
8. The force cannot be in the +x direction

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Commentary for teachers:

Answer

(6) Students will likely forget that the charge is negative.

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