Which of the following is the difference between the n-p-n and conventional bipolar transistor?

Which of the following is the difference between the n-p-n and conventional bipolar transistor? Correct Answer Unconnected base

The n-p-n bipolar transistor differs in the following ways: base is unconnected, base-collector junction is photosensitive as a light gathering element.

Related Questions

For a NPN bipolar transistor, what is the main stream of current in the base region?
BJTs are bipolar junction transistors. The name bipolar is given because: