Jakarta – Lorentz force is the energy found in the flow of electricity in current-carrying or parallel wires. Just like his name, Lorentz force was discovered by physicist Hendrik Antoon Lorentz
Through the Lorentz force formula, you can understand the combined concept of electric and magnetic forces. So that it is easier to understand Lorentz style, the following is the explanation
A. Definition of Lorentz style
In the Class XII High School Physics Learning Module, Sujoko's work is explained, Lorentz force arises from a straight conducting wire carrying an electric current. The electric current in this straight wire cuts the magnetic field.
In other words, Lorentz force arises because electric charges or electric fields move in a magnetic field. The position of the force is also adjusted to where the electric charge travels in the wire.
The concept of magnetic force or Lorentz force is widely used in our daily lives. Some of them are on motorbikes, loudspeaker, computer memory, and others.
Lorentz force can also be seen in electric motors which have a wire coil and a fixed magnet. Electric motors can move because of the Lorentz force that occurs in a coil of wire carrying electric current in a magnetic field.
B. Lorentz force direction
For example, in a conductor or conductor object (wire) placed in two magnetic fields. The magnet has two different poles, South Pole (S) and the north pole (N).
If the wire is given an electric current, then the Lorentz force will appear on the wire which can move it or bend it. The direction of movement or bending of the wire will follow the direction of the Lorentz force.
The Lorentz force concept does not give rise to random directions, but has a pattern and direction perpendicular to the direction of the electric current strength (l) and magnetic (B). For, the direction will be parallel to the direction of the magnetic field.
C. Lorentz Force Formula
Following are several Lorentz force formulas based on electric current:
1. Lorentz force formula in a current-carrying wire
The magnitude of the magnetic force or Lorentz force on a current-carrying wire can be expressed in the following equation:
𝑭𝑳 = 𝑩.𝒊.𝒍. 𝒔𝒊𝒏𝜽
Information:
𝑭𝑳 = gaya Lorentz (N)
𝐵 = magnetic induction (T)
𝑖 = electric current strength (A)
𝑙 = wire length (m)
𝜃 = the angle between the direction of the electric current and the magnetic field strength (0).
2. Lorentz force formula in parallel wires
The magnitude of the magnetic field force on a wire parallel to the electric current can be found using the following formula
Information:
𝑭𝑳 = gaya magnet (N)
𝑖1 = the amount of electric current in the first wire (A)
𝑖2 = the amount of electric current in the second wire (A)
𝑙 = wire length (m)
𝑎 = distance between the two wires (m)
𝜇0 = magnetic permeability = 4 x 10-7 Wb/Am.
3. Lorentz force formula on a charge moving in a magnetic field
If there is an electric charge (q) moving at speed (v) in a magnetic field (B), then the electric charge experiences the Lorentz force which can be calculated using the formula:
𝑭𝑳 = 𝑞. 𝑣. 𝐵. 𝑠𝑖𝑛
Information:
𝑭𝑳 = magnetic force or Lorentz Force (N)
H = muatan (C)
𝑣 = speed of charge (m/s)
𝐵 = Magnetic induction (T)
𝛼 = Angle between magnetic induction and charge direction (0).
Nah, That was the discussion regarding Lorentz style starting from the definition, how to determine direction of lorentz force, to formulas that you can practice in example questions.
Source of : detik.com 29 March 2022