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The internal resistance of an ideal voltage source and an ideal current source respectively are (in ohms)
  • a)
    0 and ∞
  • b)
    0 and 1
  • c)
    ∞ and ∞
  • d)
    ∞ and 0
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The internal resistance of an ideal voltage source and an ideal curren...
Ideal voltage source: An ideal voltage source have zero internal resistance.
Practical voltage source: A practical voltage source consists of an ideal voltage source (VS) in series with internal resistance (RS) as follows.
An ideal voltage source and a practical voltage source can be represented as shown in the figure.

Ideal current source: An ideal voltage source has infinite resistance. Infinite resistance is equivalent to zero conductance. So, an ideal current source has zero conductance.
Practical current source: A practical current source is equivalent to an ideal current source in parallel with high resistance or low conductance.
Ideal and practical current sources are represented as shown in the below figure.
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Most Upvoted Answer
The internal resistance of an ideal voltage source and an ideal curren...
Infinity.

An ideal voltage source has zero internal resistance because it can provide a constant voltage regardless of the current flowing through it.

An ideal current source has infinite internal resistance because it can provide a constant current regardless of the voltage across it.
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The internal resistance of an ideal voltage source and an ideal current source respectively are (in ohms)a)0 and ∞b)0 and 1c)∞ and ∞d)∞ and 0Correct answer is option 'A'. Can you explain this answer?
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