Correct Answer - Option 1 : the opposition of circuit to flow of alternating current
Explanation:
Resistance
It is an electrical parameter that is used as the measurement of opposition to the electric current.
The reciprocal of the resistance is called the 'Admittance'.
Resistance is defined as:
\(R=\frac{ρ l}{A}\)
ρ: Resistivity of the material
l: length of the conductor
A: Area of the cross-section of the conductor.
It is measured in Ω.
Impedance:
The complex quantity of the resistance is defined as the Impedance of a circuit.
It is the same as that of the resistance.
Admittance
It is defined as the parameter which is used to measure the flow of current easily in a circuit.
\(admitatance=\frac{1}{resistance}\)
It is measured in Ω-1 or Siemens(S).
From Ohm's law admittance is:
\(Admittance = \frac{I}{V}\)
Capacitance
It is an electrical element that stores energy in the form of a static electric charge.
Energy stored in a capacitor is:
\(E=\frac{1}{2}CV^2\)
V: Voltage across the capacitor.
SI unit is Farads. (F)
