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Physics - Electrostatics Question with Solution | TestHub

PhysicsElectrostaticsElectric Field & ForceMedium2 minQB

PhysicsMediummultiple choice

Electric field, due to an infinite line of charge, as shown in figure at a point P at a distance r from the line is E. If one half of the line of charge is removed from either side of point A , then

Options:(select one or more)

Answer:

B, C

Solution:

For the full infinite line, field at P is purely perpendicular: $E_{y} = \frac{2 kλ}{r} = E, E_{x} = 0$ .

Removing half the line on either side of A leaves a half-line, whose components are $E_{x} = \frac{kλ}{r} = \frac{E}{2}$ and $E_{y} = \frac{kλ}{r} = \frac{E}{2}$ .

So (B) and (C).

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

⏱ 2mℹ️ Source: QB

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