Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsElectric Field & ForceEasy2 minPYQ_2020

PhysicsEasysingle choice

A ring of charge with radius $0.5 m$ has $0.002 π m$ gap. If the ring carries a charge of $+1 C,$ the electric field at the centre is

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Answer:

Solution:

Approaximate charge on the element opposite to the gap is

$Δ q = \frac{Q}{2 π r} (0.002 π)$

$= \frac{1}{2 π (0.5)} \times \frac{2 π}{1000} = 2 \times 10^{- 3} C$

$E = \frac{9 \times 10^{9} \times 2 \times 10^{- 3}}{{(0.5)}^{2}} = 7.2 \times 10^{7} N C^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:ElectrostaticsSubtopic:Electric Field & Force

⏱ 2mℹ️ Source: PYQ_2020

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