Quality factor of circuit with capacitance-radio tuner

Assignment Help Physics

Reference no: EM13538054

A radio tuner is built by connecting an L=0.41mH inductor and variable capacitor in series with an antenna. The driving voltage is provided by the radiowaves that pass through the antenna, and the total internal resistance of the circuit is R=1.2Ohms.

(a) To what capacitance should the variable capacitor be adjusted to tune the radio to 520kHz?

(b) What is the quality factor of the circuit with the capacitance you found in (a)?

(c) If another station operates at 470kHz with the same amplitude at your location, what is the ratio of the output voltage due to this background signal to the output of the signal for which the circuit has been tuned? The output voltage is the voltage across the capacitor. (See Example 32.8)

(d) Find this same ratio if the other station operates with the same amplitude at frequency 515kHz.

Reference no: EM13538054

Questions Cloud

What is the thermal efficiency of the engine : A diesel engine performs 2090 J of mechanical work and discards 4125 J of heat each cycle. What is the thermal efficiency of the engine?

Compute the expectation value in angstroms : Write down the wave function for the ground state of an electron in a hydrogen atom in spherical coordinates. What are n, l, and m? Compute the expectation value (r), in Angstroms.

Is the image upright or inverted : A concave cosmetic mirror has a focal length of 24 cm. A 5.0 cm -long mascara brush is held upright 12 cm from the mirror.

Large aquarium of height : A large aquarium of height 5.98 m is filled with fresh water to a depth of D = 2.40 m. One wall of the aquarium consists of thick plastic with horizontal length W = 7.10 m. By how much does the total force on that wall increase if the aquarium is nex..

Quality factor of circuit with capacitance-radio tuner : A radio tuner is built by connecting an L=0.41mH inductor and variable capacitor in series with an antenna. The driving voltage is provided by the radiowaves that pass through the antenna, and the total internal resistance of the circuit is R=1.2O..

What frequency is inductive reactance equal to resistance : A coil has resistance R=14Ohms and inductance L=3milliHenries and is powered by a generator with variable frequency and maximum voltage V = 10Volts.

What is the drift velocity of the electrons in the wire : A potential difference of 12 V is placed across the ends of a wire of resistance 2.625times10-3 Ohm. If the density of electrons in the wire is 6times1028 electrons/m3 and the cross sectional area of the wire is 2times10-5 m2, what is the drift veloc..

The maximum energy density of the capacitor : An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of and The electric potential of the inner conductor with respect to the outer conductor is (k = 1/4??0 = 8.99 × 109 N ? m2/C2) The maxim..

What is the speed of sound in air at this temperature : On a hot summer day, the temperature of air in Arizona reaches 113°F. What is the speed of sound in air at this temperature? (Enter your answer to four significant figures. The speed of sound at 0°C is 331 m/s. Use the conversion 0°C = 273 K as neces..

User Account

All Pages