Question

4. An AM radio antenna has 3000 loops with diameter 0.20 m; a radio station makes its 2 nt magnetic field oscillate at 1400 kHz pointing left, then right. a) which coil orientation is best for the antenna's reception? { ABC} b) calculate the voltage from the antenna Rho 5. We might power a Crooke's tube using a Tesla coil transformer with 20 turns on the primary; 10,000 turns on the secondary, using 2.0 A from a 6 VAC 60 Hz sine wave source to the primary. a) what RMS voltage would occur across the secondary? b) what would the peak voltage from the output? c) what current would flow in the secondary? 12. A generator produces 9 Vrms as a cosine at 500 Hz, is connected to a capacitor that has 70 22 reactance at that frequency, in series with a coil that has 600 inductive reactance and 102 resistance. Determine: a) angular frequency b) capacitor's capacitance c) coil's inductance d) coil's impedance e) the total impedance f) current thru the capacitor g) voltage across the capacitor

Answer 1

- change Flux linked with the coil must with time. an C there is no flere linkage . so, В is best ring flun oo EBA 근 Bi B Bi ALA ] = A (6+B;) -T; HIN At (Half time period en 24 (28) 448 ΔΩ 사 NCA HAB) EN Emf indemed, EEN -- 4 NABA (3000) ((0.1) (x164) (1400x16H2 E = 1.055 volts