What are the characteristics of magnetic field strength due to current carrying solenoid?

Question

Answer

Current carrying solenoid will completely act as a BAR MAGNET .

Therefore magnetic field will be same as the bar magnet .

Also magnetic field strength is same as bar magnet.

The field can be greatly strengthened by the addition of an iron core. Such cores are typical in electromagnets.

Answer

1.The magnetic field lines originated from the north pole and end at its south pole.
2.The magnetic field lines come closer to one another near the poles of the magnet but they are widely separated at other places.
3.The magnetic field lines do not intersect one another.

Answer

**Characteristics of Magnetic Field Strength due to Current Carrying Solenoid**

A solenoid is a cylindrical coil of wire that is tightly wound in a helical shape. When an electric current flows through a solenoid, it generates a magnetic field around it. The magnetic field strength due to a current carrying solenoid exhibits several important characteristics, which are explained in detail below:

**1. Magnetic Field Inside the Solenoid:**
The magnetic field strength inside the solenoid is uniform and strong. The magnetic field lines are parallel to the axis of the solenoid and are closely packed together. This uniform magnetic field is due to the fact that the magnetic fields generated by each individual turn of the coil add up and reinforce each other.

**2. Magnetic Field Outside the Solenoid:**
Outside the solenoid, the magnetic field strength is weak. The magnetic field lines are spread out and diverge as they move away from the solenoid. This is because the magnetic fields of different turns of the coil cancel each other out to a large extent.

**3. Magnetic Field Direction:**
The magnetic field inside the solenoid is in the form of concentric circles around the axis of the solenoid. The direction of the magnetic field can be determined using the right-hand rule. If the right-hand thumb points in the direction of the current flow, the curled fingers indicate the direction of the magnetic field lines.

**4. Magnetic Field Strength Equation:**
The magnetic field strength (B) inside a solenoid can be calculated using the equation B = μ₀ * n * I, where μ₀ is the permeability of free space (4π × 10⁻⁷ Tm/A), n is the number of turns per unit length of the solenoid, and I is the current passing through the solenoid. This equation shows that the magnetic field strength is directly proportional to the current and the number of turns per unit length.

**5. Magnetic Field Strength and Current:**
The magnetic field strength inside the solenoid increases with an increase in the current passing through the solenoid. This means that as the current increases, the magnetic field strength also increases proportionally.

**6. Magnetic Field Strength and Number of Turns:**
The magnetic field strength inside the solenoid also increases with an increase in the number of turns per unit length of the solenoid. This implies that as the number of turns increases, the magnetic field strength also increases proportionally.

Overall, the magnetic field strength due to a current carrying solenoid is strong and uniform inside the solenoid, while it becomes weak and diverging outside the solenoid. The direction of the magnetic field can be determined using the right-hand rule, and the magnetic field strength can be calculated using the equation B = μ₀ * n * I. The magnetic field strength is directly proportional to the current and the number of turns per unit length of the solenoid.

Answer

As we know that in bar magnet the magnetic field lines are arises from North pole and moves towards South pole at non-uniform speed outside and in inside uniform speed then here this case is same that Magnetic field lines are never intersect each other and thy are closed curved.

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