A Parallel Plate Capacitor Is Fully Charged at a Potential $\kappa$

question 12

Multiple Choice

A parallel plate capacitor is fully charged at a potential V. A dielectric with constant $\kappa$ = 4 is inserted between the plates of the capacitor while the potential difference between the plates remains constant. Which one of the following statements is false concerning this situation?

• A)The energy density remains unchanged.
• B)The capacitance increases by a factor of four.
• C)The stored energy increases by a factor of four.
• D)The charge on the capacitor increases by a factor of four.
• E)The electric field between the plates increases by a factor of four.

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