explanation please 3. The intensity of the light bulh is independen of frequèney

Question

explanation please

3. The intensity of the light bulh is independen of frequèney toli independent of frequency 12. An ac voltmeter, calibrated to show mis values, is used to measure voltages in the current shown. In this circuit, the ac has an rms voltage of 6.00 V and a requency (not angular frequency) of250 kHz. The inductance in the circuit is 400 mH, the capacitance is 0.100 HF, and the reststance 1s2.800 a. What is the reactance of each part of the circuit that has a reactance? b. What is the impedance af the circuit? fr

Explanation / Answer

a) inductive reactance = XL = wL = 2 x 3.14 x 25000 x 0.0004 = 62.83 ohm

capacitive reactance = Xc = 1/wC = 1/(2 x 3.14 x 25000 x 10-7) = 63.662 ohm

b) impedance = sqrt[R2 + (Xc - XL)2] = sqrt[2.82 + (63.662 - 62.83)2] = 2.921 ohm

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