Home
Class 12
PHYSICS
A radio can tune over the frequency rang...

A radio can tune over the frequency range of a portion of MW broadcast band: (800 kHz to 1200 kHz). If its LC circuit has an effective inductance of `200muH` , what must be the range of its variable capacitor?
(Hint: For tuning, the natural frequency i.e., the frequency of free oscillations of the LC circuit should be equal to the frequency of the radio wave.]

Text Solution

Verified by Experts

`C_1 = 198, C_2 = 88 pF`
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    NEW JOYTHI PUBLICATION|Exercise EVALUATION QUESTIONS AND ANSWERS|16 Videos
  • ALTERNATING CURRENT

    NEW JOYTHI PUBLICATION|Exercise CONTINUOUS EVALUATION (PROJECT)|1 Videos
  • ALTERNATING CURRENT

    NEW JOYTHI PUBLICATION|Exercise SOLUTIONS TO EXERCISES FROM NCERT TEST|24 Videos
  • ATOMS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|5 Videos

Similar Questions

Explore conceptually related problems

Calculate the range of the variable capacitor that is to be used in a tuned-collector oscillator which has a fixed inductance of 150 p H.The frequency band is from 500 KHz to 1500KHz.

An LC circuit contains a 20 mH inductor and a 50 muF capacitor with an initial charge of 10 mС. The resistance of the circuit is negligible. Let the instant the circuit is closed be t = 0. a. What is the total energy stored initially? Is it conserved during LC oscillations? b. What is the natural frequency of the circuit? c. At what time is the energy stored i. completely electrical (i.e., stored in the capacitor) ii. completely magnetic (i.e., stored in the inductor) d. If a resistor is inserted in the circuit, how much energy is eventually dissipated as heat?