Magnetic Field Direction in Circular Loops

To determine the direction of the magnetic field produced by a current-carrying circular loop, the appropriate rule is the Right Hand Thumb Rule.

Applying the Right Hand Thumb Rule

• Imagine grasping the circular loop with your right hand.
• Curl the fingers of your right hand in the direction of the electric current flowing through the loop.
• Your outstretched thumb will then point in the direction of the magnetic field lines inside the loop.

Understanding Other Rules

• Fleming's Right Hand Rule is primarily used to find the direction of induced current in electromagnetic induction.
• Fleming's Left Hand Rule is used to determine the direction of force on a current-carrying conductor placed in a magnetic field.
• Maxwell's Left Hand Rule is not a standard or widely recognized rule for this purpose.

Therefore, the Right Hand Thumb Rule is the correct method for finding the magnetic field direction related to a current-carrying circular loop.