The condition for the validity under ohm's law is that

  • AResistance must be uniform
  • BCurrent should be proportional to size of resistance
  • CResistance must be wire wound type
  • DTemperature at positive end should be more than the temperature at negative end
Correct Answer : (A)

Resistance must be uniform

Hints :

The draft velocity of the electron is


In gases, the flow of current is due to

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