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The symbol shown here is:



  • a)
    Voltage controlled current source

  • b)
    Current controlled current source

  • c)
    Current controlled voltage source

  • d)
    Voltage controlled voltage source

Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The symbol shown here is:a)Voltage controlled current sourceb)Current ...
Concept:
Independent sources:
An independent voltage source maintains a voltage (fixed or varying with time) which is not affected by any other quantity. Similarly, an independent current source maintains a current (fixed or time-varying) which is unaffected by any other quantity.
Dependent sources:
  • Some voltage (current) sources have their voltage (current) values varying with some other variables.
  • They are called dependent (voltage or current) sources or controlled (voltage or current) sources.
  • It is represented in diamond symbol.
  • Since the control of the dependent source is achieved by a voltage or current of some other element in the circuit, and the source can be voltage or current. 
  • It follows that there are four possible types of dependent sources, namely:
  1. Voltage-controlled voltage source (VCVS)
  2. Current-controlled voltage source (CCVS)
  3. Current-controlled current source (CCCS)
  4. Voltage-controlled current source (VCCS)
Application:
1.  
In the given circuit, the dependent source is a current source (gvc) which depends on the voltage in the other branch. Hence dependent source in the circuit is a voltage-controlled current source.
2. 
In the given circuit, the dependent source is a current source (dic) which depends on the current in the other branch. Hence dependent source in the circuit is a current-controlled current source.
3. 
In the given circuit, the dependent source is a voltage source (bvc) which depends on the voltage in the other branch. Hence dependent source in the circuit is a voltage-controlled voltage source.
4. 
In the given circuit, the dependent source is a voltage source (ric) which depends on the current in the other branch. Hence dependent source in the circuit is a current-controlled voltage source.
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Community Answer
The symbol shown here is:a)Voltage controlled current sourceb)Current ...
There are two kinds of voltage or current sources:
Independent Source: It is an active element that provides a specified voltage or current that is completely independent of other circuit variables.
Dependent Source: It is an active element in which the source quantity is controlled by another voltage or current in the circuit.
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