The strength of the magnetic field created by current in a long straight wire is given by B=μ0I2πr(longstraightwire), where I is the ...The strength of the magnetic field created by current in a long straight wire is given by B=μ0I2πr(longstraightwire), where I is the current, r is the shortest distance to the wire, and the constant μ0=4π×10−7T⋅m/a is the permeability of free space. The direction of the magnetic field created by a long straight wire is given by right hand rule 2 (RHR-2): Point the thumb of the right hand in the d
The direction of the magnetic field created by a long straight wire is given by right hand rule 2 (RHR-2): Point the thumb of the right hand in the direction of current, and the fingers curl in the di...The direction of the magnetic field created by a long straight wire is given by right hand rule 2 (RHR-2): Point the thumb of the right hand in the direction of current, and the fingers curl in the direction of the magnetic field loops created by it. a rule to determine the direction of the magnetic field induced by a current-carrying wire: Point the thumb of the right hand in the direction of current, and the fingers curl in the direction of the magnetic field loops
