Question

(2) Calculate the frequency at which the inductive resistance of
0.7H inductor is 220 ohm ​

Answer 1

Given :

Inductance of inductor = 0.7H

Inductive reactance $=$ 220Ω

To Find :

We have to find frequency of alternating current$.$

Solution :

For an a.c. circuit containing inductor only, Inductive reactance is given by

• X(L) = ωL

X(L) denotes inductive reactance

ω denotes angular frequency

L denotes inductance

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❅ Relation b/w angular freq. and freq. is given by, ω = 2πf

➝ X(L) = ωL

➝ X(L) = 2πf × L

➝ f = X(L) / 2πL

➝ f = 220/(2×3.14×0.7)

➝ f = 50Hz