Physics, 18.07.2019 07:30 KENYONWASHINGTON868

An fm radio station broadcasts at a frequency of 91 mhz . part a what inductance should be paired with a 9.0 pf capacitor to build a receiver circuit for this station?

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It's not clear exactly how you intend to use an ' L ' and a ' C ' in a
receiver circuit.

Perhaps you just want a simple resonant 'tank', so that the voltage
across it peaks at 91 MHz. Then you just want to know what parallel
L-C is resonant at 91 MHz.

Without resistance to complicate things, the resonant frequency
of a parallel L-C is

f = 1 / [ 2π √(LC) ].

Before we get tangled up in this thing,
let's just solve it for ' L ' :
Multiply each side by √(LC), then divide each side by f ,
and then it says

√(LC) = 1 / (2π f)

Divide each side by √C :

√L = 1 / 2πf√C

then square each side:

L = 1 / (4 · π² · f² · C)

and now we can easily go ahead and find ' L '.

L = 1 / (4 · π² · 91² · 10¹² · 9 · 10⁻¹²)

When I stuff that through my calculator, I get

L = 0.34 microhenry

Answer from: Quest

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

Answer from: Quest

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

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An fm radio station broadcasts at a frequency of 91 mhz . part a what inductance should be paired wi...