Electrical Engineering ⇒ Topic : Purely Inductive Circuit

PURE INDUCTANCE 

If a sinusoidal e.m.f. is placed across a pure inductance the current will be found to be,

where V = voltage (r.rn.s. value); f = frequency ; and L = the inductance in henries (H)

(The value of I being the r.m.s. value) 

The current will lag behind the voltage and the graphs will be as shown in Fig.(a), the phase difference being 90⁰

                                                         ^{Fig. (a)Purely inductive circuit}

The expression 2πfL (or ωL) is termed as inductive reactance (X_L)

Power consumed is zero