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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Definitions:

Defense Mechanism

Mental tactics employed subconsciously to shield an individual from the distress caused by thoughts or emotions that are not acceptable.

Repression

A defense mechanism where uncomfortable thoughts or memories are unconsciously blocked from conscious awareness.

Underlies

To lie or be situated under something; to be the support or basis of; to form the foundation of.

Projection

A defense mechanism in psychology where individuals attribute their own unacceptable thoughts, feelings, and motives to another person.