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    Capacitors: Energy, Voltage & Capacitance with Dielectric.

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    A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V. (C is the capacitance and U is the stored energy.) Answer the following questions regarding the capacitor charged by a battery. For each statement below, select True or False.

    1. After being disconnected from the battery, inserting a dielectric with k will decrease V.
    2. After being disconnected from the battery, increasing d increases U.
    3. With the capacitor connected to the battery, decreasing d decreases Q.
    4. With the capacitor connected to the battery, inserting a dielectric with k will increase C.
    5. After being disconnected from the battery, inserting a dielectric with k will decrease U.
    6. After being disconnected from the battery, decreasing d increases C.

    © BrainMass Inc. brainmass.com June 3, 2020, 8:39 pm ad1c9bdddf
    https://brainmass.com/physics/energy/capacitors-energy-voltage-capacitance-with-dielectric-147104

    Solution Summary

    The dielectric slab is inserted in a charged capacitor and the change in voltage and energy is calculated in two cases (1) with the battery connected and (2) battery disconnected before the slab inserted.

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