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What is the electric field at the centre...

What is the electric field at the centre of an equilateral triangle, if three identical charges each of charge q are fixed at the three corners of the triangle?

Text Solution

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`E_(PB)=E_(0)" and "E_(PA)=E_(0)`
Also, `E.=E_(0)cos60^(@)xx2=E_(0)`
`E=E_(0)-E_(0)=0`
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Knowledge Check

  • Three charge each of magnitude q are placed at the corners of an equilateral triangle , the electrostatic force on the charge placed at the centre is ( each side of triangle L).Their equilibrium is :

    A
    Zero
    B
    `1/(4pi in_0) q^2/L^2`
    C
    `1/(4pi in_0)(3q^2)/L^2`
    D
    `1/(12pi in_0) q^2/L^2`

  • Three charges each of are placed at the comers of an equilateral triangle. If the force any two charges be F ,then the net force on each charge is.

    A
    `Sqrt 2F`
    B
    `3 F`
    C
    `Sqrt 3F`
    D
    `phi = int E. d I`

  • There charges , each of +1 muC , are placed at the corners of an equilateral triangle. If the force between any two charges be f, then the net force on either charges will be :

    A
    `sqrt 2F`
    B
    `sqrt3F`
    C
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    D
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