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Define 'Ideal voltage source' and 'Practical voltage source'. Draw the symbol for each.

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i) Ideal voltage source: A voltage source whose terminal voltage always remains constant for all values of output current, is known as an ideal voltage source. It has zero internal resistance. 


Symbol of Ideal Voltage Source:- 

image


ii) Practical voltage source: A voltage source whose terminal voltage falls with the increase in the output current due to the voltage drop in the internal resistance. 


Symbol of Practical Voltage Source: 

image

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