Induction coil of self- inductance 7
44
H and its inductive reactance 50Ω if its ohmic
resistance was 30Ω calculate the current frequency and also the coil impedance.

a) (500 Hz – 31.58 Ω).
b) (50 Hz – 85.31 Ω).
c) (50 Hz – 58.31 Ω).