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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsElectric Field & ForceMedium3 minQB

PhysicsMediuminteger

7 rods, AB, BC, CD, DE, EF, FG \& GH are uniformly charged. Electric field due to each one is E at the centre of cube. Net electric field due to the entire combination is $n E$ . Find n.

diagram

Answer:

Solution:

Fields of AB, CD, EF, GH cancel in pairs at the centre; DE, CB, FG remain.

Resultant of BC and FG is $2 E$ at $13 5^{\circ}$ to the field of DE; combining gives $E_{n e t} = E$ .

$n = 1$

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

⏱ 3mℹ️ Source: QB

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