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Physics & engineering

LC resonant frequency

LC resonant frequency: For an ideal lumped LC circuit, resonant frequency = 1 / (2π√(L × C)), with L in henries and C in farads.

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How it works

For an ideal lumped LC circuit, resonant frequency = 1 / (2π√(L × C)), with L in henries and C in farads.

Input definitions

Inductance (mH)
Enter the value in the labeled unit.
Capacitance (µF)
Enter the value in the labeled unit.

A worked example

Inductance (mH)
10
Capacitance (µF)
1
1591.549431

Assumptions & limits

Use consistent stated units. Ideal geometric or physical model; verify dimensions and applicability before real-world design.

Sources & review

Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.

Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.

Common questions

Will a real circuit resonate at exactly this frequency?

Usually not. Component tolerances, parasitic capacitance and inductance, damping and circuit loading can shift the measured response.

How does LC resonant frequency work?

For an ideal lumped LC circuit, resonant frequency = 1 / (2π√(L × C)), with L in henries and C in farads.

What are the limits of LC resonant frequency?

Use consistent stated units. Ideal geometric or physical model; verify dimensions and applicability before real-world design.

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