The magnetic field inside a long, straight solenoid carrying current is ____________.

Correct option is A

Correct Answer:(A) uniform and parallel to the axis of the solenoid

• Inside a long, straight solenoid carrying current, the magnetic field is uniform and parallel to the axis of the solenoid.
• The magnetic field lines inside the solenoid are straight and evenly spaced, making the field strength constant along the length of the solenoid.
• This uniformity is one of the key properties that makes solenoids useful in many applications, such as electromagnets and inductors.

•  inversely proportional to the current: The magnetic field inside a solenoid is directly proportional to the current, not inversely proportional.
•  zero: The magnetic field inside the solenoid is not zero; in fact, it is stronger and uniform compared to the outside.
• stronger near the edges: The magnetic field is actually weaker near the edges of the solenoid and strongest in the center.