​A Circuit Consists of an AC Audio Amplifier,a Resistor,and a Speaker,all

question 64

Multiple Choice

​A circuit consists of an AC audio amplifier,a resistor,and a speaker,all in series.The amplifier puts out an alternating voltage of 16.0 V (rms) ,the resistance of the resistor is 10.0 Ω,and the speaker has a resistance of 11.9 Ω.What is the time-averaged power delivered to the speaker?

• A)​21.5 W
• B)​30.5 W
• C)​6.35 W
• D)​8.69 W

---

Definitions:

Proton Spin Decoupled

A nuclear magnetic resonance (NMR) spectroscopy technique where the interaction between proton spins is removed to simplify the spectrum.

O-Diethylbenzene

An organic compound that is a variation of diethylbenzene where two ethyl groups are attached to the benzene ring in ortho positions to each other.

NMR Spectrum

A representation of the nuclear magnetic resonance of a compound, showing the environment of hydrogen or carbon atoms.

Proton Spin Decoupled

A technique in nuclear magnetic resonance (NMR) spectroscopy that simplifies the spectrum by removing interactions between proton spins.