| ADVANCED LESSON 15 | |
| LEARNING OBJECTIVES and NOTES | |
| Power in DC circuits Understand and apply the formulae relating power to potential difference, current and resistance. |
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The power in the load is equal to the voltage multiplied by the current.
The formula is written as  So, if a transmitter has a 12v supply
and is drawing 2 Amps, then Power produced by the transmitter = 12x2 =
24 Watts. This does not mean that you will get 24 Watts of Rf out as
some of the power will be wasted as heat energy.
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| Example 1 Click "next step" to see the stages in the calculations. 
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Click "next step" to see the stages in the calculations.  |