draw the v-i graph for ohmic and non ohmic conductors also write any two drawbacks of Ohm's Law
Answers
Ohmic conductors are instruments which obey Ohm's law while non Ohmic conductors are instruments which do not obey the Ohm's law. Graph of ohmic conduction has a straight slope and non-ohmic conduction do not have fast and slope. Ohm is unit of resistance. Resistance is the obstruction offered in the the direction of flow of electric current.
◆Refer to the attachment below for the VI graph of ohmic and non ohmic conductors .
◆Examples of such are,
Ohmic conductor - resistance made of manganin.
Non ohmic conductor - Electrolyte.
Drawbacks of OHM'S LAW
◆Main drawback of Ohm's law is , when it comes to the terminal of battery or voltage source, it's not applicable.
At terminal of battery, voltage is constant with the respect of current.
◆Only when temperature and given conditions during process are constant, ohms law is valid.
