Discussion
Filling that same capacitor with a dielectric of relative permittivity 4 raises its capacitance to
Answer: B
The capacitance is multiplied by the relative permittivity, so \( 4 \times 88.5 = 354 \) pF. The stored energy at a given voltage rises by the same factor, which is why high permittivity ceramics are used where compactness matters.
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