Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsMiscellaneousMedium2 minQB

PhysicsMediummultiple choice

A particle having mass $m$ and positive charge $q$ whirls along vertical circle of radius $R$ . At the centre of circle, another positive charge $2 q$ is fixed.

Options:(select one or more)

Answer:

A, B, C

Solution:

$mg - \frac{2 kq ^{2}}{R ^{2}} + T = \frac{mv ^{2}}{R}$ -------------(1)

$- mgR + \frac{1}{2} mu^{2} = mgR + \frac{1}{2} mv^{2} - - - - - (2)$

$I f T = 0 \Rightarrow u_{m i n} = 5 gR - \frac{2 kq ^{2}}{mR}$

Stream:JEESubject:PhysicsTopic:ElectrostaticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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