A Parallel Plate Capacitor of Area a = 30 Cm² $\kappa$

question 47

Multiple Choice

A parallel plate capacitor of area A = 30 cm² and separation d = 5 mm is charged by a battery of 60-V.If the air between the plates is replaced by a dielectric of $\kappa$ = 4 with the battery still connected,then what is the ratio of the initial charge on the plates divided by the final charge on the plates?

• A)4.3
• B)1
• C)16
• D)0.25
• E)4.0

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