Question

The current carrying device which produces a magnetic field similar to that of a bar magnet is:

• A. A straight conductor
• B. A circular loop
• C. A solenoid
• D. A circular coil

Answer 1

The Correct Option is C

Step 1: Understand the behavior of magnetic fields
When an electric current flows through a conductor, it generates a magnetic field around it.
The shape and nature of the magnetic field depend on the arrangement of the conductor.

Step 2: Analyze the options conceptually
- A straight wire produces concentric circular magnetic field lines.
- A circular loop enhances the field at the center but doesn't resemble a bar magnet entirely.
- A solenoid (a coil of wire wound in cylindrical form) produces a magnetic field pattern very similar to that of a bar magnet.

Step 3: Reasoning
When current passes through a solenoid, it creates a uniform magnetic field inside and curved magnetic field lines outside, just like a bar magnet. It has a north and south pole similar to a bar magnet.

Final Answer:
A solenoid