Concept explainers
Suppose two nearby conductors carry the same negative charge. Can there be a potential difference between them? If so, can the definition of capacitance, C = Q/V, be used here?

If two nearby conductors carry the same negative charges means does it carry the potential difference between them, if so capacitance can be used here.
Answer to Problem 1Q
Yes, there will be potential difference between the two nearby conductors carry the same negative charges, and definition of capacitance cannot be used here.
Explanation of Solution
Suppose two nearby conductors carry same charges, there would be potential difference because they have different charge densities. When they have same amount with same sign charges then there would zero potential difference.
So, that the definition of capacitance
Conclusion:
Yes, there will be potential difference between the two nearby conductors carry the same negative charges, and definition of capacitance cannot be used here.
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