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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsElectric Field & ForceMedium3 minQB

PhysicsMediumsingle choice

For a uniformly charged ring of radius $R$ , the electric field on its axis has the largest magnitude at a distance $h$ from its centre. The value of $h$ is:

Options:

Answer:

Solution:

$E = \frac{k Q h}{( h ^{2} + R ^{2} ) ^{3/2}}$
For maximum:
$\frac{d E}{d h} = 0 \Rightarrow h = \frac{R}{2}$

Subject:PhysicsTopic:ElectrostaticsSubtopic:Electric Field & Force

⏱ 3mℹ️ Source: QB

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