A Parallel-Plate Capacitor Has a Voltage of 391 V Applied

question 21

Multiple Choice

A parallel-plate capacitor has a voltage of 391 V applied across its plates,then the voltage source is removed.What is the voltage across its plates if the space between them becomes filled with mica? (The dielectric constant for mica is 5.4 and for air is 1.0006. )

• A)72 V
• B)2110 V
• C)641 V
• D)18,675 V

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