Question

According to the Right-Hand Thumb Rule for a current loop, when the fingers of the right hand are curled in the direction of conventional current, the extended thumb points:

Options

• In the direction of the current flow

• Toward the South pole face of the loop

• Along the plane of the loop, in the direction of the current

• In the direction of the magnetic moment (and also toward the North pole face of the loop)

Answer 1

Curling the right-hand fingers in the direction of conventional current makes the extended thumb point in the direction of the magnetic moment \(\vec{m}\), which also points toward the North pole face of the loop.