 
			 
			MCQOPTIONS
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				| 1. | The dominant contribution to current comes from holes in case of which of the following? | 
| A. | Metals | 
| B. | Intrinsic semiconductors | 
| C. | p-type extrinsic semiconductors | 
| D. | n-type extrinsic semiconductors | 
| Answer» D. n-type extrinsic semiconductors | |