AQA A-Level Physics common mistakes
Electric fields common mistakes
Study Electric fields with curriculum-aligned Common Mistakes resources, practice links, and exam-focused support.
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common mistakes
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Topic
Electric fields
Common mistakes
Linking Electric Potential Energy
Students often confuse electric potential energy with electric potential, leading to incorrect calculations when relating them to charge.
Fix itTo correctly link electric potential energy (E_p) to charge (Q) and electric potential (V), use the formula E_p = Q x V. Substitute the values for charge and potential, perform the multiplication, and ensure to state the final answer with the correct units (Joules).
Misinterpreting Electric Potential Graphs
Students often confuse the shape of electric potential graphs, misinterpreting the relationship between electric potential and distance.
Fix itTo fix this, students should focus on understanding that the slope of the graph represents electric field strength, and recognize how different charge configurations affect the graph's shape.
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