6. What is the ratio of impedance when Z1 = 3.2 x 103 and Z2 = 1.45 x 102 ? 7a. The ratio of impedance of two substances is 7. What percentage of intensity is transmitted at the boundary? 7b. What percentage of intensity is reflected?

Ø = 20 mm m₁ = 476 Wdg/m n₂ = 300 Wdg f = 10.7 kHz = 10.7 x 10³ Hz Ho,theoretical = 4 x 10-7 N/A² 1.26 x 10-6 N/A² Calculate the cross-sectional area of the induction coil: A = πr² = π (× 10-³)² = Write down the slope of the line: slope = [m] =3.81 • Using the relation emf = μoAn₁n₂ (2πf)1, calculate the experimental value for vacuum permeability: slope Mo,experimental Anin₂ (2f) Calculate the error percentage: error % = Ho.theoretical Ho,experimentai Mo,theoretical x 100% =

An L-R-C series circuit with L = 0.12 H, R= 240 2 and C = 7.3 μF carries an rms current of O. 45 A with a frequency of f = 400 Hz. 1. What are the phase angle and power factor of this circuit? 2. What is the net impedance of the circuit? 3. What is the rms voltage of the source? 4. What average power is delivered by the source?

P2