An amplifier is an electronic component that boosts an electric current by turning a small current into a larger one using an external power supply. It does not create energy on its own due to the law of conservation of energy, but rather uses an external power source to increase the strength of an existing electric signal.

1. Sound Amplifier
Arizona Western College
PHY-131-001
Prof. Reetika Dhawan
Axel De La Paz

2. What is an amplifier?
• Is an electromagnetic or electronic component that boosts an electric
current.

3. How does an amplifier work?
• An amplifier's job is to turn a small electric current into a larger one.

4. Amplifiers Do Not Create Energy
• Conservation of Energy Law
• External Power Supply

5. External Power Supply