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What is the link between current and magnetism ?
5 Answers
- JimLv 71 year agoFavorite Answer
Current in a wire causes a magnetic field according to the 'right-hand rule'.
The strength depends on the number and tightness of the coil, the core material it's wrapped around, the current, etc.
- Anonymous1 year ago
they cause eachother
- Anonymous1 year ago
magnetic field Phi = L*i
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- az_lenderLv 71 year ago
A current induces a magnetic field; for example, the Biot-Savart Law says
B = (mu-nought)i/(2*pi*r),
where i is the magnitude of the current, r is the distance from the current-carrying wire, and B is the magnitude of the induced magnetic field.
Another example is Faraday's Law of Induction,
E = -d(phi-B)/dt,
where phi-B is the magnetic flux through a plane area. If the area is enclosed by a conducting wire loop, the induced voltage (E) will produce a current (E/R) in the wire.
