Express Ohm.s law in terms of current density and conductivity.

Diode, transistor are examples of elements which do not obey ohm’s law:- Explain why Ohm’s Law fails when large current flows through a conducting wire.

"Ohms law is not a fundamental law" Comment on this.

Conductance(G)conductivity(K)and molar conductivity Lambda_m are terms used in electrolytic conduction. How do conductivity and molar conductivity vary with concentration of electrolytic solution?

Biot - Savart.s law relates current with the magnetic field produced by it.Write the mathematical expression of the above law in vector form.

Resistance of 0.1 MKCI solution in a conductivity cell is 300 ohm and conductivity is 0.013 S cm^(-1) . The value of cell constant is: