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A sphere of radius 1 cm has potential of...

A sphere of radius `1 cm` has potential of `8000 V`, then energy density near its surface will be

A

`64xx10^(5) J//m^(3)`

B

`8xx10^(3) J//m^(3)`

C

`32 J//m^(3)`

D

`2.83 J//m^(3)`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • A sphere of radius 1 cm has potential of 10000V, then energy density near its surface will be

    A
    `64xx10^(5) J//m^(3)`
    B
    `8xx10^(3) J//m^(3)`
    C
    `32 J//m^(3)`
    D
    `4.425 J//m^(3)`

  • A hollow metallic sphere of radius 0.1 m is charged to a potential of 5 V. The potential at its centre is

    A
    inifinite
    B
    5 V
    C
    zero
    D
    cannot be determined

  • An isolated conduction sphere sphere whose radius R=1 m has a charge q=1/9nC. The energy density at the surfasce of the sphere is

    A
    `epsilon_0/2 J//m^3`
    B
    `epsilon_0J//m^3`
    C
    `2epsilon_0J//m^3`
    D
    `epsilon_0//3Jm^3`

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