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Topic 18Physics (Cambridge)

Electric fields

Electric fields — Cambridge International A Level Physics (9702, Topic 18).

Practice questions
1

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understand that an electric field (force field) is defined as a region where a charged particle experiences a force · understand that electric field strength is defined as E = F/Q and be able to use this equation · be able to use the equation F = Q1 Q2 / (4 pi epsilon0 r^2) for the force between two charges · be able to use the equation E = Q / (4 pi epsilon0 r^2) for the electric field due to a point charge · know and understand the relation between electric field and electric potential · be able to use the equation E = V/d for an electric field between parallel plates · be able to use V = Q / (4 pi epsilon0 r) for a radial field · be able to draw and interpret diagrams using field lines and equipotentials to describe radial and uniform electric fields

40 min

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