Question

what is variable current​

Answer 1

Answer:

Variable Current and Voltage Regulator is used to simulate mains conditions of different countries. Also it is used for verifying frequency response of power devices, frequency relays and components. Variable current variable frequency source are used for checking current transformers.

Explanation:

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Answer 2

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$\longrightarrow$ In the context of circuit definition above, the important physical quantities are current and voltages (and electric power). These are the circuit variables that form the basis for communication between circuit elements. ... Similarly, the value of current is incomplete unless a reference current direction is assigned