Electrical Engineering - Circuit Theorems and Conversions - Discussion
Discussion Forum : Circuit Theorems and Conversions - True or False (Q.No. 3)
3.
A practical current source has a finite internal resistance.
Discussion:
15 comments Page 1 of 2.
Sanjeev said:
1 decade ago
This is wrong answer because when you talking about practical thing than there is no meaning of infinite. If we thinking on basis of rule than infinite resistance work as open circuit it means infinite voltage drop which is not possible in practical case.
Sujeet kumar said:
10 years ago
For a practical current source it has finite resistance, but when we talk about ideal current source than it has infinite resistance, the person who is saying that internal resistance is zero it is valid for ideal voltage source.
Anandhu said:
5 years ago
An ideal current source has infinite resistance, but a practical current source has finite resistance.
1. Voltmeter resistance is high or finite.
2. Ammeter zero or low.
3. Voltage source zero.
4. Current source infinity.
1. Voltmeter resistance is high or finite.
2. Ammeter zero or low.
3. Voltage source zero.
4. Current source infinity.
(1)
Mallikarjun kh said:
8 years ago
The Practical current source consists that "current source in parallel with small internal resistance". But in the ideal current source, there is no internal resistance means that parallel circuit is open.
Prashant singh said:
1 decade ago
Voltage source has resistance in series whereas current source has resistance in parallel ie., resistance is now acting as conductance so it has some value of G. But for ideal G= infinite.
Xyz said:
1 decade ago
The fact can be easily explained by OHMs law that whenever a voltage is applied across a conductor thn current will flow. If their is no resistance then no current.
Chip Tausch said:
1 decade ago
I figured this out by the fact that if you have INFINITE internal resistance (ie an OPEN circuit) then you will not have a very practical current source!
Kalai said:
1 decade ago
If there is no resistance, available current source is present, but there is no voltage drop, so resistance must be present there.
Rajakumar said:
6 years ago
Actually, ideal current source has infinite internal resistance but a practical current source has high resistance.
Mukku said:
1 decade ago
Being practical current source it has finite internal resistance otherwise it is infinite in case of ideal.
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