A modern color TV set draws 5.0 A when operated on 120V. a. How much power does the set use? ...

Question:

A modern color TV set draws 5.0 A when operated on 120V.

a. How much power does the set use?

b. If the set is operated for an average of 14 hr/day, What energy in KWh does it consume per month (30days)?

Voltage:

Voltage is defined as the change of energy per unit charge between two points and is represented by {eq}(V) {/eq}. In an electric circuit, if resistance is kept unchanged, increasing voltage will increase the current rate. To determine the amount of current flowing in an electric circuit, Ohm's law is used.

Answer and Explanation: 1

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We are given the following data:

  • Current drawn, {eq}I=5.0\ \text{A} {/eq}
  • Voltage, {eq}V=120\ \text{V} {/eq}

(a) Power consumed by the TV set is:

...

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Voltage Sources: Energy Conversion and Examples

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Chapter 6 / Lesson 6
21K

Electrons are motivated to power circuits through voltage sources, which can be clearly seen in batteries and other everyday items. Generators can come in the form of nuclear, coal, natural gas, hydroelectric, and wind power to generate voltage. In this lesson, learn about energy conversion, voltage, voltage sources, and examples of these things in everyday life, including batteries and generators.


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