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PRACTICE · MEMBERSIntermediate · Single correct

PRACTICE / Dielectrics

Insert a dielectric with the battery connected

A 2 μF capacitor remains connected to a 6 V ideal battery. A dielectric of relative permittivity 4 fully fills the gap.

Find its final free plate-charge magnitude.

Organize the givens & assumptions
  • Cinitial = 2 μF
  • V = 6 V
  • κ = 4

Ideal capacitor remains on an ideal 6 V source; dielectric fully fills the gap with κ = 4; leakage neglected.

  1. A24 μC24\ \mathrm{\mu C}
  2. B48 μC48\ \mathrm{\mu C}
  3. C12 μC12\ \mathrm{\mu C}
  4. D3 μC3\ \mathrm{\mu C}

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