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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsElectric Field & ForceMedium2 minQB

PhysicsMediumnumerical

Two charge particles are fixed at $P_{1}$ and $P_{2}$ separated by a distance 9 m . Find position (in meter) on the line $P_{1} P_{2}$ from $P_{1}$ where electric field is zero (null point).

Answer:

3.00

Solution:

ratio of charge at $P_{1}$ and $P_{2}$ is $q_{1} : q_{2} = \frac{1}{4}$

so null point distance $\frac{x _{1}}{9 - x _{1}} = \frac{q _{1}}{q _{2}} = \frac{1}{2}$

$x_{1} = \frac{1}{3} \times 9 m = 3 m$

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

⏱ 2mℹ️ Source: QB

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