The ideal current source will have

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IPRC (ISRO) Technician B (Electronics) 2018 Official Paper (Held on 22 April 2018)
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  1. high internal resistance
  2. zero internal resistance
  3. an infinite internal resistance
  4. low internal resistance

Answer (Detailed Solution Below)

Option 3 : an infinite internal resistance
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Detailed Solution

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Ideal Current Source: An ideal current 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 a high resistance or low conductance.

Ideal and practical current sources are represented as shown the below figure.

Important Points

Ideal Voltage Source: An ideal voltage source has zero internal resistance.

Practical Voltage Source: A practical voltage source consists of an ideal voltage source (VS) in series with internal resistance (RS).

An ideal voltage source and a practical voltage source can be represented as shown in the figure.

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