n-p-n transistors are preferred to p-n-p transistors because they have
A
low cost.
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B
low dissipation energy.
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C
capable of handling large power.
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D
electrons have high mobility than holes and hence high mobility of energy.
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Solution
The correct option is D electrons have high mobility than holes and hence high mobility of energy. In npn transistors electrons are majority charge carriers and in pnp transistors holes are majority charge carriers. Electrons have high mobility than holes and hence high mobility of energy.
Hence, n−p−n transistors are preferred than p−n−p transistors.