To tune a radio, the antenna connects to a resonant LC circuit- a coil with inductance L in series with a capacitor with variable capacitance. By turning the radio knob you adjust the capacitance to C. Then a certain frequency will be strongest from the antenna. For the values of L and C given below, what are (a) the resonant frequency, (b) the wavelength, and (c) the speed of the radio waves? L = 0.270 mH; C = 28.0 pF;

To tune a radio, the antenna connects to a resonant LC circuit- a coil with inductance L in series with a capacitor with variable capacitance. By turning the radio knob you adjust the capacitance to C. Then a certain frequency will be strongest from the antenna. For the values of L and C given below, what are (a) the resonant frequency, (b) the wavelength, and (c) the speed of the radio waves? L = 0.270 mH; C = 28.0 pF;

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

An inductor and a capacitor having reactance’s of 40Ω and 65Ω respectively, are connected in series to a resistor of 20Ω to an ac source of 220V, 50Hz. Calculate the (i) Inductance of the inductor (ii) Capacitance of the capacitor (iii) Impedance of the circuit (iv) Circuit current (v) Voltage drop across resistor, inductor and capacitor.
In an oscillating LC circuit in which C = 4.5 μF, the maximum potential difference across the capacitor during the oscillations is 1.5 V and the maximum current through the inductor is 52.8 mA. What are (a) the inductance L and (b) the frequency of the oscillations? (c) How much time is required for the charge on the capacitor to rise from zero to its maximum value?
In an oscillating LC circuit, the maximum charge on the capacitor is 9.0 x 10-6 C and the maximum current through the inductor is 2.5 mA. (a) What is the period of the oscillations (in s)? (b) How much time (in s) elapses between an instant when the capacitor is uncharged and the next instant when it is fully charged?
In an oscillating LC circuit in which C = 3.5 µF, the maximum potential difference across the capacitor during the oscillations is 1.7 V and the maximum current through the inductor is 57.5 mA. What are (a) the inductance L and (b) the frequency of the oscillations? (a) Number i Units H. (b) Number i Units Hz
Radios use resonance in order to tune-in to a particular station. A physics student builds a simple radio using a RLC series circuit. They decide to use a resistor with R = 40.5 2 but they only have one capacitor with capacitance C = 215 pF. To listen to their favorite station KXY 84.1 FM, which is at a frequency of 84.1 MHz, what must be the inductance L of their circuit's inductor? When they tune-in to KXY 84.1 FM, they measure a rms current of 0.0380 A. What is the rms voltage Vrms across the circuit when they tune-in? L = H Vrms V
An ac electrical generator is made by turning a flat coil in a uniform constant magnetic field of 0.225 T. The coil consists of 33 square windings and each winding is 40.0 cm on each side. It rotates at a steady rate of 745 rpm about an axis perpendicular to the magnetic field passing through the middle of the coil and parallel to two of its opposite sides. An 8.50-2 light bulb is connected across the generator. 1) Find the voltage amplitude for the light bulb. (Express your answer to two significant figures.) V Submit 2) Find the current amplitude for the light bulb. (Express your answer to two significant figures.) A Submit 3) At what average rate is heat generated in the light bulb? (Express your answer to two significant figures.) W Submit 4) How much energy is consumed by the light bulb every hour? (Express your answer to two significant figures.) kJ Submit
The charge on the capacitor of an LC circuit with capacitance C and inductance L obeys the following equation. Find the maximum current in the circuit. q= Q cos [t/(LC)0.5] Q Q/(LC) 0.5 zero QQ²/(LC) 0.5 imax 1/(LC) 0.5
A 2.8 kg body oscillates in SHM on a spring that, when extended 5.4 mm from its equilibrium position, has an 8.2 N restoring force. What are (a) the angular frequency of oscillation, (b) the period of oscillation, and (c) the capacitance of an LC circuit with the same period if L is 5.8 H?