What is the magnetic effect of electric current?

When an electric current is passed through a wire, it starts acting like a magnet. This is known as the magnetic effect of the electric current. When the current is stopped, the wire loses its magnetic effect. 

• A magnetic field is generated as a result of the magnetic effects of electric currents. 
• At any given point, the magnetic field is a vector field as it is specified by direction as well as magnitude.
• Electric motors are a popular application of the magnetic effects of electric current.
• A current carrying conductor gives rise to a magnetic field through magnetic lines of force or magnetic field lines.
• Around a straight conductor, the magnetic field lines are concentric. 

Fleming’s Right Hand Rule

Fleming’s Right Hand Rule states that if our right hand thumb, forefinger and middle finger are arranged perpendicular to each other, then – 

• The thumb points the direction of the magnetic force.
• The forefinger points the direction of the magnetic field.
• The middle finger represents the direction of the current.

Fleming’s Left Hand Rule

Fleming’s Left Hand Rule states that if our left hand thumb, forefinger and middle finger are perpendicular to each other, then – 

• The thumb denotes the magnetic force direction.
• The forefinger denotes the magnetic field direction.
• The middle finger denotes the direction of the current.

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