Conductors | Lecture Note - Edubirdie

University:
Santa Fe College
Course:
ETS 2527C | Electromechanical Components and Mechanisms
Academic year:

2024
Views:

37

Pages:

3
Author:

Jabin F.

Conductors # Conductors F = qE F = -eE No free charge can reside inside the Conductor. (i) volume charge density (ρ) = 0 (ii) Surface charge density (σ) (iii) Ein = 0 (iv) Potential inside the Conductor is Constant. Vin Constant. Conductors are equi poth surfaces. (V) Electric field is normal to conducting surface. and external. Er, Eθ, Eϕ normal, tangential and not exist. Ques. Calculate E.F and poth of a Conducting Sphere having Rodius R and total charge Q. Also Calculate poth energy of the sphere.. Soln E.E: qenc = 0, Ein = 0 qenc = Q Eout = Q / 4πER^2 poth Vin = - ∫ Eout dr Vin = Q / 4πER Vout Vout = - ∫ Eout dr Vout = Q / 4πER Potential Energy: U = (1/2) * ∫ (Ein^2 + Eout^2) * 4πr^2 dr U = (1/2) * (Q^2 / 4πE) * (1/R) U = Q^2 / 8πER if charge on only surface and density 'σ' the poth directly -> [only Case for charge on surface] V(out R) = (1/4πε) * (Q/R) V(in R) = (1/4πε) * (Q/R)

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