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Electric field intensity at a point vari...

Electric field intensity at a point varies as `r^(-3)` for

A

A point charge

B

An electric dipole

C

A plane infinite sheet of charge

D

A line charge of infinite length

Text Solution

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The correct Answer is:
To solve the question regarding how the electric field intensity varies with distance \( r \), we will analyze the different scenarios provided in the video transcript step by step. ### Step 1: Understanding the Variation of Electric Field Intensity The problem states that the electric field intensity \( E \) varies as \( r^{-3} \). This means: \[ E \propto \frac{1}{r^3} \]
To solve the question regarding how the electric field intensity varies with distance \( r \), we will analyze the different scenarios provided in the video transcript step by step. ### Step 1: Understanding the Variation of Electric Field Intensity The problem states that the electric field intensity \( E \) varies as \( r^{-3} \). This means: \[ E \propto \frac{1}{r^3} \]
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Knowledge Check

  • Electric field intensity at a ponnt varies as r^(-3) for

    A
    a point charge
    B
    An electric dipole
    C
    A plane infinite sheet of charge
    D
    A line charge of infinite length

  • Electric field at a point varies as r^(0) for

    A
    An electric dipole
    B
    A point charge
    C
    A plane infinite sheet of charge
    D
    A line charge of infinite length

  • The electric field intensity at a point located at distance r(r lt R) from the center of a spherical conductor (radius R) charged Q will be-

    A
    `kQR//r^(3)`
    B
    `kQr//R^(3)`
    C
    `kQ//r^(2)`
    D
    zero

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    " Electric field intensity due to a point charge " "q" ' at a distance 'r' from it is "

    Electric field intensity at a point is inversely proportional to cube of its distance due to

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