A coil of inductance 0.4 mH is connected to a capacitor of capacitance 400 pF. To what wavelength is this circuit tuned ?
Text Solution
Verified by Experts
`L=0.4 mH = 0.4 xx 10^(-3) H, C = 400 p f = 4 xx 10^(-10)F` Frequency `f=(1)/(2 pi sqrt(LC))=(1)/(2 xx 3.14)xx(1)/(sqrt(0.4xx10^(-3)xx4xx10^(-10)))=(10^(-7))/(6.28xx4)Hz` If the speed of electromagnetic wave is v, then `lambda = (v)/(l) = (3xx10^(8) ms^(-1))/((10^(7))/(6.28xx4 Hz))=753.6 m`
Topper's Solved these Questions
ALTERNATING CURRENT
AAKASH INSTITUTE|Exercise Try Yourself|15 Videos
ALTERNATING CURRENT
AAKASH INSTITUTE|Exercise Assignment (Section - A) ( Objective Type Questions ( One option is correct))|34 Videos
A coil of inductance 0.4 mH is connected to a capacitor of capacitance 400 pF. To what wavelength is this circuit truned ?
A coil of inductance 150 mH is connected in series with a variable capacitor of capacitance 20 pF to 500 pF. Calculte the frequency range to which the circuit can be tuned.
An inductor of inductance 2 mH is connected across a charged capacitor of capacitance 5 mu F and the L-C circuit is set oscillating at its natural frequency. What is the natural angular frequency of its oscillations?
A coil of inductance o.01 H is connected in series with a capacitor of capacitance 25 muF with an AC source whose emf is given by E = 310 sin 314t (volt). What is the reactance of the circuit ?
A capacitor of capacitance 1 mu F is charged to a potential of 20 volt. The battery is then disconnected and a pure inductive coil of inductance 10 mH is connected across the capacitor so that L-C oscillation are set-up in the circuit. What is the maximum current in the circuit?
An an circuit consists of an inductor of inductance 10 mH connected in parallel with a capacitor of capacity 50 pF. Determine the resonant frequency.
An A.C. circuit consists of inductor of inductance 125mH connected in parallel with a capacitor of capacity 50muF . Determine the resonant frequency.
The frequency of voltage source used in ac circuit is 5 kHz. The circuit contains a coil of inductance of 0.5 mH, a capacitor of capacitance of 10muF and resistor of resistance 8 Omega are connected in series with source. The impedance of circuit is
A 16 mu F capacitor is charged to a 20 Volt potential. Battery is then disconnected and inductor of inductance 40 mH is connected across the capacitor, So that LC oscillations are step-up. Maximum current in the coil is
A coil of inductance 8.4 mH and resistance 6 (Omega) is connected to a 12 V battery. The current in the coil is 1.0 A at approximately the time
AAKASH INSTITUTE-ALTERNATING CURRENT -Assignment (Section-J) (Aakash Chailengers Questions)
