The electron concentration in an n -type semiconductor is the same as hole concentration in a p -type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.

1. A. Current in p -type > current in n -type
2. B. Current in n -type > current in p -type.
3. C. No current will flow in p -type, current will only flow in n -type
4. D. Current in n -type = current in p -type

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