The collector of a transistor is ___________ doped

The correct answer is: A. heavily doped.

The collector of a transistor is heavily doped with impurities to increase the number of free electrons available for conduction. This allows the collector to carry a large current when a small current is applied to the base.

The other options are incorrect because they do not describe the doping of the collector accurately.

• Option B: moderately doped. The collector is not moderately doped, it is heavily doped.
• Option C: lightly doped. The collector is not lightly doped, it is heavily doped.
• Option D: none of the above. This option is incorrect because it does not describe the doping of the collector accurately.

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