Exam-style question
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In an electric field-line diagram, what does the direction of the lines represent?.
- A.The direction of the electric current.
- B.The direction of the electric field.
- C.The direction of the force on a negative charge.
- D.The direction of the force on a positive charge.
Model answer
What a good answer should say
- The direction of the force on a positive charge.
Explanation
Why this works
The direction of electric field lines indicates the direction of the force that would act on a positive charge placed in the field. This means that if a positive charge were to be placed in the field, it would move along the direction of the lines.
Therefore, the implication is that understanding this direction is crucial for predicting the behavior of charges in electric fields. This conclusion highlights the fundamental nature of electric fields in influencing charged particles.
Common mistake
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