Which of the following correctly describes the magnetic field around a current-carrying straight conductor?

medium Q14 of 15

General Science - Physics (Basics)

AMagnetic field lines form concentric circles around the conductor

BMagnetic field lines are straight and parallel to the conductor

CMagnetic field lines radiate outward like spokes on a wheel

DMagnetic field lines are absent around a current-carrying conductor

Step-by-Step Solution

Step 1: Identify the concept
The question tests knowledge of magnetic effects of electric current.
Step 2: Apply the concept
According to the right-hand thumb rule, magnetic field lines around a straight current-carrying conductor form concentric circles. Other options incorrectly describe the field pattern.
Final Answer:
Magnetic field lines form concentric circles around the conductor → Option A
Quick Check:
Magnetic field around conductor = concentric circles ✅

Quick Trick: Use right-hand thumb rule to visualize magnetic field direction.

Common Mistakes:

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