Leakage current in a diode is caused by minority carriers, which are charge carriers present in smaller quantities compared to the majority carriers. In a p-n junction, the minority carriers allow a small flow of current even under reverse bias. Therefore, the correct choice is 'a. Minority carriers'. ;
The leakage current in a diode is caused by minority carriers, which are charge carriers present in smaller quantities. This current occurs even when the diode is reverse-biased and is influenced by temperature. Thus, the correct answer is 'a. Minority carriers'.
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