Column I gives physical quantities based on a situation in which an ideal cell of emf V is connected across a cylindrical rod of uniform cross-section area and conductivity (sigma) as shown in figure E, J, phi and I are electric field at, current density through, electric flux through and current through shaded cross section repectively as shown in figure. Physical quantities in column-II are equal to those in column i Match the expression in Column I with the statement in Column II

`{:(,"Column-I",,"Column-II"),("(A)",phi/i,,"(P)Conductivity of rod"),("(B)",E/J,,"(Q) Resistance of rod"),("(C)",sigma phiV,,"(R)Resistivity of rod"),("(D)",V/sigmaphi,,"(S)Power delivered to rod"):}`

Answer

[(A)R(B)R;(C)S;(D)Q]

Explanation

(A) `phi/i=(vec(E) . vec(A))/(jA)=vec(E)/j=rho`
(C) `sigmaphiV=(phiV)/rho=(EAV)/rho=(V^(2)A)/(rhoL)=V^(2)//R`
(D) `V/(sigmaphi)=(Vrho)/phi=(Elrho)/(EA)=R`