what are the conditions under which ohm's law isn't obeyed?
Ohm's law is not applicable in the case of
(1) diode (semiconductor device)
(2) large variation of temperature.
A bulb filament allows passage of 2A current when connected to a 220V supply & that of 1.1A when connected to 110V. Does the filament obey Ohms law or not? Why?