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In the figure shown P is a point on the ...

In the figure shown P is a point on the surface of an imaginary sphere.
`{:(,"Column-I",,,"Column-II"),((A),"Electric field at point P",,(p),"due to "q_(1) "only"),((B),"Electric flux through a small area at P",,(q),"due to "q_(2)"only"),((C),"Electric flux through whole sphere",,(r),"due to both "q_(1) and q_(2)):}`

Text Solution

Verified by Experts

The correct Answer is:
(A) r (B) r (C) p
(A) Electric at a point is the vector sum of all individual field at that point
(B) Electric flux `ointvec(E).dvec(S)=q_(enc)/in_(0)`
(C) Electric flux `ointvec(E).dvec(S)=q_("enclosed")/in_(0)`
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Knowledge Check

  • Electric field intensity at point P due to charge distributed over a sphere is:

    A
    `E = (1)/( 4 pi epsi _(0)) (q)/(r)`
    B
    `E = ( sigma R ^(2))/( epsi _(0)r ^(2))`
    C
    `E = (1)/(4 pi epsi _(0)) (q)/(r)`
    D
    `E =0`

  • The electric potential at a point in free space due to a charge Q coulomb is Q xx 10^(11) volts. The electric field at that point is

    A
    `4 pi epsilon_(0)Q xx 10^(22) V//m`
    B
    `12 pi epsilon_(0)Q xx 10^(20) V//m`
    C
    `4 pi epsilon_(0)Q xx 10^(20) V//m`
    D
    `12 pi epsilon_(0)Q xx 10^(22) V//m`

  • The electric potential at a point in free space due to charge Q coulomb is Q xx 10^(11) volts . The electric field at that point is

    A
    `4 pi in_(0) Q xx 10^(20)` volt/m
    B
    `12 pi in _(0) Q xx 10^(22)` volt/m
    C
    `4 pi in _(0) Q xx 10^(22)` volt/m
    D
    `12 pi in_(0) Q xx 10^(20)` volt/m

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