Question

★ Topic: Electrostatics.
★ Sub Topic: Electric Field due to a charged Conductor.
★ Answer: k = 6

Solve the attachment ASAP!
Explanation required.

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Answer 1

We suppose that the cavity is filled up by a positive as well as negative volume charge of r. So the electric field now produced at P is the superposition of two electric fields.

(i) The electric field created due to the infinitely long solid cylinder is E1=ρR4ε0 directed towards the +Y direction

(ii) The electric field created due to the spherical negative charge density E1=ρR96ε0 directed towards the -Y direction.

∴ The net electric field is

E=E1−E2=16[23ρR16ε0]7

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Answer 2

★★★

Please refer to the attachment William bro!

I hope it will be helpful to you.

★★★