NEETChemistrySolid State
What are npn and pnp types of transistors used for?
Options
- ATo convert light energy into electrical energy
- BTo detect or amplify radio or audio signals
- CTo serve as rectifiers
- DTo generate electric current
Correct answer
B. To detect or amplify radio or audio signals
Step-by-step solution
npn and pnp types of transistors are used to detect or amplify radio or audio signals.