6. State Ohm’s law. Write the necessary conditions for its validity. How is this law verified experimentally?
What will be the nature of graph between potential difference and current for a conductor? Name the
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➡️Ohms Law :
The current flowing through the conductor is directly propotional to the potential difference applied across the ends and provided temperature and other physical conditions reamians constant.
V= I R
R is constant propotionalty called resistance.
➡️Necessary conditions :
✴️ Applied to only good conductor.
✴️Do not applicable for semiconductor and vacuum tubes
✴️Ohms Law only applicable when temperatures and other physical conditions reamians constant.
✴️Ohms Law do not applicable for low temperatures and very high temperatures.
➡️Nature of graph in Ohms Law:
The nature of the graph will be straight line.
Because current is directly propotional to the potential difference
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