A Capacitor Has a Voltage Of $391 \mathrm {~V}$ Applied Across Its Plates,and Then the Voltage Source Is Removed

question 73

Multiple Choice

A capacitor has a voltage of $391 \mathrm {~V}$ applied across its plates,and then the voltage source is removed.What is the potential difference across its plates if the space between them is then filled with mica,having a dielectric constant of 5.4?

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

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