Physics · Optoelectronics
Which of the following devices is designed to sense incident light levels and alter the current flowing between its emitter and collector terminals accordingly?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1IR LED
- 2Power transistor
- 3Phototransistor✓
- 4Resistor
Correct answer
Phototransistor
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