Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

Two positive ions, each carrying a charge $q$ are separated by a distance $d$ . If $F$ is the force of repulsion between the ions, the number of electrons missing from each ion will be ( $e$ being the charge on an electron)

Options:

Answer:

Solution:

From Coulomb's law force of repulsion is

$F = k \frac{q^{2}}{d^{2}} \Rightarrow F = \frac{1}{4 π ε_{0}} \frac{q^{2}}{d^{2}}$

Where, $q = n e$

$∴ F = \frac{1}{4 π ε_{0}} \frac{n^{2} e^{2}}{d^{2}} \Rightarrow n = \sqrt{\frac{4 π ε_{0} F d^{2}}{e^{2}}}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:ElectrostaticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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