Magnitude of the electric field between the plates

[lil.l3b91]

A uniform electric field exists between two oppositely charged parallel plates connected to a 13.0V battery. The plates are separated by 7.00x10-4 m.a) Determine the magnitude of the electric field between the plates
b) If a charge of -4.29x10-6 C moves from one plate to another, calculate the change in electric potential energy of the charge.

attempt:

σ = Q / L² = 13.0 μC / (7.00x10^-4)²

E = σ / ε₀
?

 

[lep11]

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