For your final exam in electronics, you’re asked to build an LC circuit that oscillates at 10 kHz. In addition, the maximum current must be 0.10 A and the maximum energy stored in the capacitor must be 1.0 x 10-5 J. What values of inductance and capacitance must you use?

Respuesta :

Answer:

 L= 2 mH

[tex]C=1.26\times 10^{-7}\ F[/tex]            

Explanation:

Given that

Frequency , f= 10 kHz

Maximum current ,I = 0.1 A

Maximum energy stored ,E= 1 x 10⁻⁵ J

The maximum energy stored in the inductor is given as follows

[tex]E=\dfrac{1}{2}LI^2[/tex]

Where ,L= Inductance

I=Current

E=Energy

Now by putting the values in the above equation

[tex]10^{-5}=\dfrac{1}{2}\times L\times 0.1^2[/tex]

[tex]L=\dfrac{2\times 10^{-5}}{0.1^2}\ H[/tex]

L=0.002 H

L= 2 mH

We know that frequency f is given as

[tex]2\pi f=\dfrac{1}{\sqrt{LC}}[/tex]

C=Capacitance  , f=frequency ,L=Inductance

Now by putting the values

[tex]2\pi \times 10\times 10^3=\dfrac{1}{\sqrt{0.002\times C} }[/tex]

[tex]62831.85=\dfrac{1}{\sqrt{0.002\times C}}[/tex]

[tex]\sqrt{0.002\times C=\dfrac{1}{62831.85}[/tex]

[tex]0.002\times C=0.0000159^2[/tex]

[tex]C=\dfrac{0.0000159^2}{0.002}\ F[/tex]

[tex]C=1.26\times 10^{-7}\ F[/tex]

Therefore the inductance and capacitance will be 2 mH and 1.26 x 10⁻⁷ F respectively.

Lanuel

Given the following data:

Frequency = 10 kHz

Maximum current = 0.10 Amps

Maximum energy = [tex]1.0 \times 10^{-5}[/tex] Joules

To find the values of inductance and capacitance that must be used for this LC circuit:

For the inductance:

Mathematically, the maximum energy stored in an inductor is given by the formula:

[tex]E = \frac{1}{2} LI^2[/tex]