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Which statement is correct

1. N- type germanium is negatively charged and P- type germanium is positively charged
2. Both N- type and P- type germanium are neutral
3. N- type germanium is positively charged and P- type germanium is negatively charged
4. Both N -type and P- type germanium are negatively charged

Correct answer: Both N- type and P- type germanium are neutral

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