Asked by Cheesecake
True or false, moving electric charges produced magnetic fields
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True.
Moving electric charges produce magnetic fields — for example, an electric current in a wire creates a magnetic field encircling the wire (Ampère's law/Biot–Savart law). For a point charge q moving with velocity v (nonrelativistic), the magnetic field at position r (relative vector from the charge) is
B(r) = (μ0/4π) · q (v × r) / |r|^3.
Note: electric and magnetic fields are frame-dependent and are unified by special relativity (they transform into each other for observers in different inertial frames).
Moving electric charges produce magnetic fields — for example, an electric current in a wire creates a magnetic field encircling the wire (Ampère's law/Biot–Savart law). For a point charge q moving with velocity v (nonrelativistic), the magnetic field at position r (relative vector from the charge) is
B(r) = (μ0/4π) · q (v × r) / |r|^3.
Note: electric and magnetic fields are frame-dependent and are unified by special relativity (they transform into each other for observers in different inertial frames).
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