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Electric fields (A-level only)

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Question 2

What are the magnitude of the electric field strength and the electric potential at a radial distance of $0.5R\,$ from the centre of the sphere?

Electric field strength: $2 E$ , Electric potential: $4 V$

Electric field strength: $4 E$ , Electric potential: $4 V$

Electric field strength: $2 E$ , Electric potential: $2 V$

Electric field strength: $4 E$ , Electric potential: $2 V$

Electric fields (A-level only) Questions

A Level
Physics
Electric fields (A-level only)