A conducting sphere holding a charge of +10 μC is placed centrally inside a second uncharged conducting sphere - AQA - A-Level Physics - Question 20 - 2018 - Paper 2
Question 20
A conducting sphere holding a charge of +10 μC is placed centrally inside a second uncharged conducting sphere.
Which diagram shows the electric field lines for the... show full transcript
Worked Solution & Example Answer:A conducting sphere holding a charge of +10 μC is placed centrally inside a second uncharged conducting sphere - AQA - A-Level Physics - Question 20 - 2018 - Paper 2
Step 1
Diagram A
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Answer
Diagram A does not correctly represent the electric field lines. The electric field should radiate outward from the positively charged central sphere.
Step 2
Diagram B
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Answer
Diagram B represents the electric field lines correctly as they show the outward direction from the charged sphere towards infinity, which is expected in such a configuration.
Step 3
Diagram C
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Answer
Diagram C incorrectly shows the electric field lines as directed inward; this contradicts the nature of electric fields around a positive charge.
Step 4
Diagram D
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Answer
Diagram D also incorrectly depicts the electric field lines, similar to Diagram C, showing them incorrectly directed toward the charge.
