MCQ
When potential difference is applied across an electrolyte, then $Ohm's$ law is obeyed at:
- AZero potential.
- BVery low potential.
- CNegative potential.
- ✓High potential.
✓
Answer
Correct option: D.
High potential.
When voltage is applied to an electrolyte, dissociation of ions starts.
At low voltages as the voltage increases the number of ions conducting also increases making a non linear increase of current.
After a certain voltage when the ions are dissociated and no more dissociation, the electrolyte behaves as a conductor and obeys ohm's law.
Thus at high voltages, an electrolyte obeys ohm's law.
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