Start Free Mock LoginAlready registered? Login here

Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

The capacity of an isolated sphere is increased $n$ times when it is enclosed by an earthed concentric sphere. The ratio of their radii is

Options:

Answer:

Solution:

$C_{1} = 4 π ε_{0} R_{1}$

and $C_{2} = 4 π ε_{0} (\frac{R_{1} R_{2}}{R_{2} - R_{1}})$

Given that $C_{2} = {nC}_{1}$

$∴ \frac{R_{1} R_{2}}{R_{2} - R_{1}} = {nR}_{1}$

or $\frac{R_{2} / R_{1}}{R_{2} / R_{1} - 1} = n$

or $\frac{R_{2}}{R_{1}} = \frac{n}{n - 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:ElectrostaticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...