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.

Name two devices which do not obey Ohm.s law.

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

Which of the following obeys Ohm.s law?

Let 's calculate the heat developed when 3A current flows through an electric iron box designed to work under '230 V'.

Gauss.s law is true for any closed surface, no mat ter what its shape or size say the following state ments are true or false. a) Gauss.s law implies that the total electric flux through a closed surface is zero if no charge is enclosed by the surface. b) This law is useful for the calculation of electro static field when the system doesn.t possess any symmetry

Inspite of the validity of Ohm.s law, it has some limitations. Give one limitation of Ohm.s law.