ElectroPhysics Calculator

Calculate electric flux, Gauss's law applications, and solid angles

Electric Flux Calculator

E

θ

Formula:

Φ = E × A × cos(θ)

Where:

Φ = Electric Flux (N·m²/C)
E = Electric Field (N/C)
A = Area (m²)
θ = Angle between E and normal to surface

Electric Field (E) in N/C

Area (A) in m²

Angle (θ) in degrees

0° (parallel) 90° (perpendicular)

Gauss's Law Calculator

Gauss's Law:

∮E·dA = Q_enc/ε₀

Where:

E = Electric Field (N/C)
A = Area (m²)
Q_enc = Enclosed Charge (C)
ε₀ = 8.85×10⁻¹² C²/N·m² (vacuum permittivity)

Shape

Enclosed Charge (Q_enc) in C

Radius (r) in m

Solid Angle Calculator

Formula:

Ω = A/r²

Where:

Ω = Solid Angle (steradians)
A = Spherical Surface Area (m²)
r = Radius of Sphere (m)

For cone:

Ω = 2π(1 - cos(θ/2))

Calculation Method

Area (A) in m²

Radius (r) in m

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