Answer:
Explanation:
For parallel inductors ,
[tex]\frac{1}{L_R} = \frac{1}{L_1} +\frac{1}{L_2}[/tex]
[tex]\frac{1}{L_R} =\frac{1}{25} +\frac{1}{50}[/tex]
[tex]L_R=16.67 mH.[/tex]
For series combination
Total inductance
= 16.67 + 20
= 36.67 mH .
reactance of total inductance at 300 kHz
= ω[tex]L_{total}[/tex] where ω is angular frequency
= 2πf[tex]L_{total}[/tex]
= 2 x 3.14 x 300 x 10³ x 36.67 x 10⁻³
= 69.1 x 10³ ohm
Total rms current = Vrms / reactance
= 60 / 69.1 x 10³ A
= .87 x 10⁻³ A
= .87 mA
