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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsElectric Field & ForceEasy2 minPYQ_2020

PhysicsEasysingle choice

A positively charged ball hangs from a long silk thread. Electric field at a certain point (at the same horizontal level of ball) due to the ball is $E$ . If now put a positive test charge $q_{0}$ at this point and measure $\frac{F}{q_{0}}$ , then $E$

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Answer:

Solution:

$E = \frac{k Q}{r^{2}}$ .....(i)

$F = \frac{k Q q_{0}}{r_{1}^{2}} \Rightarrow \frac{F}{q_{0}} = \frac{k Q}{r_{1}^{2}}$ ....(ii)

As $r_{1} > r,$ so from equation (i) and (ii), we get $E > \frac{F}{q_{0}}$

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

⏱ 2mℹ️ Source: PYQ_2020

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