APFIVE Force on a Dielectric in a Capacitor
A dielectric slab with a dielectric constant of κ is partially inserted between the plates of a parallel-plate capacitor. The capacitor has a plate area A, a plate separation d, and is maintained at a constant voltage V by a battery. What is the electrostatic force exerted on the dielectric slab?
A
F = (κ-1)ε₀AV²/2d directed into the capacitor
B
F = (κ-1)ε₀AV²/2d directed out of the capacitor
C
F = κε₀AV²/2d directed into the capacitor
D
F = 0 (no force)
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