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A. A device to store electrical charge i...

A. A device to store electrical charge is called
a. Transformer
b. Capacitor
c. Resistor d. Inductor
B. What is meant by energy density of a parallel plate capacitor?
C. Derive an expression for the energy stored in a parallel plate capacitor.
D. What is the area of the plates of a `0.1muF` parallel plate air capacitor, given that the separation between the plates is 0.1 mm.

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(March 2015)
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Knowledge Check

  • The capacitance of a parallel plate capacitor does not depend on

    A
    area of the plates
    B
    metal of the plates
    C
    medium between the plates
    D
    distance between the plates

  • Capacitance of a parallel plate capacitor can be increased by

    A
    a) increasing the distance between the plates
    B
    b) increasing the thickness of the plates
    C
    c) increasing the thickness of the plates
    D
    d) decreasing the distance between the plates

  • The capacitance of a parallel plate capacitor does not depend on ………. .

    A
    area of the plates
    B
    metal of the plates
    C
    mediu between the plates
    D
    distance between the plates

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