Question

What do your understand by Duality Principle or Dual Networks? Explain with the help of an example. Are Electrical and Magnetic Circuits dual of each other? Can you also suggest examples of dual pairs?​

Answer 1

Explanation:

In electrical engineering, electrical terms are associated into pairs called duals. A dual of a relationship is formed by interchanging voltage and current in an expression. The dual expression thus produced is of the same form, and the reason that the dual is always a valid statement can be traced to the duality of electricity and magnetism.

Here is a partial list of electrical dualities:

voltage – current

parallel – serial (circuits)

resistance – conductance

voltage division – current division

impedance – admittance

capacitance – inductance

reactance – susceptance

short circuit – open circuit

Kirchhoff's current law – Kirchhoff's voltage law.

Thévenin's theorem – Norton's theorem