wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In a medium ware broadcast radio can be tuned in frequency range 300kHz to 1200kHz in circuit of this radio effective inductance is 300cH, what range of variable capacitor?

Open in App
Solution

Given, α1=300×103Hz
α2=1200×103Hz
L=300μH=300×106H
α1=12πLC1
C1=14πLα21
or, C1=14π2×L×(360×103)2
=14(3.14)2×3.06×106(300×103)2
=9.39×108
=93pF
In the same way,
C2=14π2Lα22
=14π2×300×106×(1200×10+3)2
=14π2(300×106)(1200×10+3)2
=14(3.14)2×(300×106)×(1200×103)2
=58pF.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electromagnetic Spectrum
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon