Magnetic Fields around Current carrying conductors

What is a solenoid?

A solenoid is a variety of electromagnet consisting of a copper wire coil wound tightly into a helix, an iron or steel housing, and a mobile plunger made of magnetic material.

When an electric current passes through the coil, the solenoid produces a magnetic field and converts that magnetic energy into mechanical motion.

Essentially, a solenoid converts electrical energy into mechanical work through electromagnetic forces.

What type of magnetic field that an electrical current produce?

It produces a magnetic field that is circular around a current-carrying conductor. The direction of the field is given by using he right-hand grip rule when considering the direction of the conventional current.

What is a conventional current?

the flow of positive charge around a circuit, moving from the positive terminal to the negative terminal. In electromagnetism, it is convention to use the direction of the conventional current.

What is electron current?

the flow of negative charge in a particular direction from the negative terminal to the positive terminal.D

Theory behind deriving the expression of finding magnetic field strength

• The magnetic field is perpendicular to the direction of the current and to a line between the wire and P.

• The magnetic of the field is inversely proportional to the distance from the wire to P

• The magnitude of the field is proportional to the current