Exam-style question
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What does the density of electric field lines in a diagram indicate?.
- A.The strength of the electric field is weak.
- B.The strength of the electric field is strong.
- C.The direction of the electric field is random.
- D.The electric field is uniform.
Model answer
What a good answer should say
- The strength of the electric field is strong.
Explanation
Why this works
The density of electric field lines is a visual representation of the electric field strength. Closer lines indicate a stronger field, while lines that are further apart indicate a weaker field.
Therefore, if the lines are dense, it shows that the electric field is strong, which implies that a greater force would be exerted on a positive charge placed in that field. This conclusion reinforces the understanding of how electric fields operate.
Common mistake
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