Question
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How much power does a 21 V amplifier use when 3.2 A of current flow through it?
Answer:

Ask by Cook Long. in the United States
Mar 23,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The amplifier uses 67.2 watts of power.

Solution

  1. The power consumed by the amplifier is given by the formula:
  1. Substitute the given values and :
  1. Calculate the product:

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Beyond the Answer

To find the power used by the amplifier, you can use the formula: Power § = Voltage (V) x Current (I). So, if the voltage is 21 V and the current is 3.2 A, the power would be P = 21 V x 3.2 A, which equals 67.2 watts. That’s a decent amount of juice for your amplifier—enough to pump out some serious sound!
Now, imagine trying to juggle multiple devices while figuring out their power consumption—it can get tricky! Always remember to keep your amplifier within its rated power and check the wiring to avoid overloading. Common mistakes include not considering the efficiency of the amplifier or the additional power drawn by other components in the audio setup. Stay sharp and power smart!

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