Question

State whether the following statement is true or false: The field at the center of a long circular coil carrying current will be parallel straight lines.

• A. True
• B. False

Answer 1

The correct option is A True

Solenoid:

1. A long circular coil acts as a magnet while carrying electric current and is known as a solenoid.

Properties of the magnetic field inside a solenoid:

1. The magnetic field is the same at each point inside a solenoid, that is, it has a uniform magnetic field.
2. A magnetic field forms a closed loop inside a solenoid.
3. Magnetic field lines never intersect each other at any point.
4. Magnetic field lines are parallel to each other and are straight lines.

Thus, magnetic field lines inside a long circular coil are parallel straight lines.

Hence, the statement is true.