Answer :
Answer:
a. [tex]40.0W[/tex]
b. [tex]0.167A[/tex]
c. [tex]720[/tex]Ω
Explanation:
Data
power average: [tex]P_{avr} =20.0W[/tex]
operating voltage: [tex]V_{rms} =120V[/tex]
a.The maximum instantaneous power: average power is one-half the maximum power.
so the maximum instantaneous power is:
[tex]=\frac{1}{\frac{1}{2} } *20.0W\\=2*20.0W\\=40.0W[/tex]
b. To find current:
The formula to find rms current is:
[tex]I_{rms} =\frac{P_{avr} }{V_{rms} } \\I_{rms} =\frac{20.0W}{120V} \\I_{rms} =0.167A[/tex]
c. To find the resistance of the player:
[tex]R=\frac{P_{avr} }{I_{rms} ^{2} } \\R=\frac{20.0W}{0.167^{2} }\\[/tex]
[tex]R=720[/tex]Ω