Control Panel:

Drag the charge(s) in 3D. Field vectors are computed on the spherical surface.

Charge configuration Positive charge (nC) +2

Negative charge (nC) −2

Vector scale 1.00 Surface E-field Magnitude (Unit: N/C or V/m)

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Units: charge in nC. Distance: 1 scene unit = 1 cm (r = 14 cm from charge to surface).
Arrows: Length scaled for visualization only.