Topic: Electronic Devices and Circuits
Compared to field effect photo transistor, bipolar photo transistors are
- A. more sensitive and faster
- B. less sensitive and slower
- C. more sensitive and slower
- D. less sensitive and faster
Answer: A. more sensitive and faster
Explanation: Based on the official answer key, the correct option is (a). Bipolar photo transistors typically offer higher sensitivity due to their inherent internal current gain ($h_{FE}$) compared to field-effect counterparts in standard applications.