Two parallel disks each having radius {R} are separated by a distance l. The surface charge densities are \\sigma and -\\sigma. The electric field at point {P}, a large distance {r} along the axis of the disks is:

Correct Answer is : σR2l2ε0r3

{\\sigmaR^{2} l}/{\\epsilon_{0} r^{3}}

{2 \\sigmaR^{2} l}/{\\epsilon_{0} r^{3}}

{ \\sigmaR^{2} l}/{4\\epsilon_{0} r^{3}}

{ \\sigmaR^{2} l}/{2\\epsilon_{0} r^{3}}

JEE Advanced 2021 Full Test 5 Paper 1

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PART – I

Physics

SECTION – A (One Options Correct Type)
This section contains 06 multiple choice questions. Each question has four choices (A), (B), (C) and (D), out of which ONLY ONE option is correct.

Question : 3 of 54

Marks: +1, -0

Two parallel disks each having radius R are separated by a distance l. The surface charge densities are σ and −σ. The electric field at point P, a large distance r along the axis of the disks is:

σR2l
ε0r3
2σR2l
ε0r3
σR2l
4ε0r3
σR2l
2ε0r3

Validate

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