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Physics
Electric Charge, Field, & Potential
A-Level Physics
Edexcel
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Ɛ = W/?
Ɛ = W/Q
Ɛ = I(R+?)
Ɛ = I(R+r)
V = Ɛ - ?
V = Ɛ - Ir
P = Ɛ x ?
P = Ɛ x I
E = I x Ɛ x ?
E = I x Ɛ x t