# Practical Current Source Consists Of

By Aina Parasher|Updated : July 13th, 2022

Practical current source consists of,

1. An ideal current source in series with an impedance
2. An ideal current source with high impedance in series
3. An ideal current source with high impedance in parallel
4. None of the above

Answer: C. An ideal current source with high impedance in parallel

## Practical current source consists of an ideal current source with high impedance in parallel.

Solution

Ideal current source delivers energy at a specified current (iS) which is independent of the voltage across the source and ideal current source has infinite internal impedance connected in parallel.

But a practical current source delivers energy at a specified current (iS) which depends on the voltage across the source. A practical current source consists of an ideal current source in parallel with high impedance.

Independent current source does not obey ohm’s law since V-I characteristics of independent current source are non-linear. But in practice independent current source does not exist.

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