Second Period - Induction and Inductive Reactance

L = XL ÷ 2pƒ

Calculate the inductance of a coil if its Inductive Reactance is Ω when it is connected to a V, Hz supply.

Ω
Solution
XL = 2pƒL

The inductance of a coil is H. Calculate its Inductive Reactance (Ω) if it is connected to a Hz supply.

Ω
Solution
T = L ÷ R

What is the Time Constant in Seconds (S) for a coil that has an Inductance of H and a resistance of Ω?

S
Solution
T = L ÷ R × 5

A coil that has an Inductance of H and a resistance of Ω.

How long will it take for the current to reach a steady value (T)?

T
Solution
Inductance
L =
N2μA L

L Inductance

N Number of turns in the coil.

μ Permeability of the Core Material

L Length of the Core's Magnetic Path

Inductance
XL =
2pƒL

XL Inductive Reactance

p Mathmatical Constant Pi (3.141)

ƒ Frequency in Hertz

L Inductance of the Coil in Henrys

Time Constant
TC =
L R

TC Time Constant

L Inductance of the Circuit in Henrys

R Impedance of the Circuit in Ohms (Ω)

L Length of the Core's Magnetic Path

ƒFrequency

LInductance

XLInductive Reactance

LLength

μPermeability (Also Micro as in μF for Microfarad)

ΩOhm

pPi (Constant - 3.141592653...)

SSecond

ΘTheta