Magnetic Field of a Current-Carrying Circular Loop

What shape does the magnetic field lines around a current-carrying circular loop take?

• Radial lines

• Straight lines

• Circular lines

• Spiral lines

What is the direction of the magnetic field at the center of a current-carrying circular loop?

• Along the axis of the loop, away from it

• Along the axis of the loop, towards it

• Perpendicular to the plane of the loop

• Parallel to the plane of the loop

How does the strength of the magnetic field at the center of a circular loop change if the radius of the loop is doubled?

• Doubles

• Halves

• Quadruples

• Remains the same

In a current-carrying circular loop, where is the magnetic field stronger – at the center or along the axis?

• At the center

• Along the axis

• Same at both locations

• Depends on the current direction

What is the relationship between the magnetic field strength (B) and the current (I) in a circular loop with radius (r)?

• B ∝ I

• B ∝ 1/I

• B ∝ r

• B ∝ 1/r

According to Ampere's Circuital Law, what is the integral of the magnetic field around a closed loop containing a current-carrying conductor?

• Zero

• Infinite

• Constant

• Directly proportional to the current

What is the direction of the magnetic field inside the circular loop carrying current when viewed from the top?

• Clockwise

• Counterclockwise

• Outward

• Inward

How does increasing the number of turns in a current-carrying circular coil affect the magnetic field strength?

• Increases

• Decreases

• Remains the same

• Depends on the radius

What is the SI unit of magnetic field strength (B) in the context of a current-carrying circular loop?

• Ampere

• Tesla

• Ohm

• Volt

In a current-carrying circular loop, where does the magnetic field become weak and approach zero?

• At the center

• Along the axis

• At the periphery

• Inside the loop