Question:
List two methods of producing magnetic fields.
List two methods of producing magnetic fields.
Updated On: Nov 6, 2023
Hide Solution
Verified By Collegedunia
Solution and Explanation
Two methods of producing magnetic fields are:
- Electric Current: When an electric current flows through a conductor, it generates a magnetic field around it. This is the principle behind electromagnets, where a coil of wire wrapped around a core (often made of iron) produces a magnetic field when an electric current passes through the coil.
- Permanent Magnets: These are materials that naturally possess their own persistent magnetic fields. They can be made from certain materials like iron, nickel, cobalt, and some rare earth metals. These materials have aligned magnetic domains that create a permanent magnetic field without the need for an external power source.
Was this answer helpful?
0
0
Top Questions on Magnetic Field And Field Lines
- Which of the following correctly describes the magnetic field near a long straight wire?
- CBSE Class X
- Science
- Magnetic Field And Field Lines
- Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?
- CBSE Class X
- Science
- Magnetic Field And Field Lines
Questions Asked in CBSE X exam
- Explain various types of fire extinguishers and their extinguishing materials.
- CBSE Class X - 2024
- Fire extinguisher
- What are the solutions to hazards in respect of Electrical Rescue Techniques?
- CBSE Class X - 2024
- Electrical hazards
- Write some of the symptoms of exposure to toxins when a person has been exposed to chemical hazards in a workplace.
- CBSE Class X - 2024
- Chemical hazards
- Enlist the points to remember for working safely around electrical panels and cabinets.
- CBSE Class X - 2024
- Electrical hazards
- What do you know about the composition of a microwave oven?
- CBSE Class X - 2024
- Repair and Maintenance
View More Questions
Concepts Used:
Magnetic Field
The magnetic field is a field created by moving electric charges. It is a force field that exerts a force on materials such as iron when they are placed in its vicinity. Magnetic fields do not require a medium to propagate; they can even propagate in a vacuum. Magnetic field also referred to as a vector field, describes the magnetic influence on moving electric charges, magnetic materials, and electric currents.
A magnetic field can be presented in two ways.
- Magnetic Field Vector: The magnetic field is described mathematically as a vector field. This vector field can be plotted directly as a set of many vectors drawn on a grid. Each vector points in the direction that a compass would point and has length dependent on the strength of the magnetic force.
- Magnetic Field Lines: An alternative way to represent the information contained within a vector field is with the use of field lines. Here we dispense with the grid pattern and connect the vectors with smooth lines.
Properties of Magnetic Field Lines
- Magnetic field lines never cross each other
- The density of the field lines indicates the strength of the field
- Magnetic field lines always make closed-loops
- Magnetic field lines always emerge or start from the north pole and terminate at the south pole.