* About magnetic field due to currents.?
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Answers
Explanation:Magnetic Field Due To Current Carrying ConductorCurrent is generally defined as the rate of flow of charge. We already know that stationary charges produce an electric field which is proportional to the magnitude of the charge. The same principle can be applied here, moving charges produce magnetic fields which are proportional to the current and hence a current carrying conductor produces magnetic effect around it. This magnetic field is generally attributed to the sub-atomic particles in the conductor, for e.g. the moving electrons in the atomic orbitals.A magnetic field has both magnitude and direction. Hence, it is a vector quantity and is denoted by B (in the diagram given below). Magnetic field due to a current-carrying conductor depends on the current in the conductor and distance of the point from the conductor. The direction of the magnetic field is perpendicular to the wire. If you wrap your right hand’s fingers around the wire with your thumb pointing in the direction of the current, then the direction in which the fingers would curl will give the direction of the magnetic field.
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