Magnetic field lines are close together in regions of space where the magnitude of the magnetic field is strong, and they are farther apart in regions where it is weak. ... The direction of the magnetic force on a charge is perpendicular to the direction of magnetic field lines. C) True.
Which best describes magnetic force?
Magnetic force, attraction or repulsion that arises between electrically charged particles because of their motion . ... The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.
Which statement is true about magnetic force?
Among all the sentences the correct statement is C) The force can both attract and repel materials . This is because positive repels other positive magnetic fields whereas positive attracts other negative magnetic fields.
What kind of force is magnetic force?
Magnetic forces are non contact forces ; they pull or push on objects without touching them. Magnets are only attracted to a few ‘magnetic’ metals and not all matter. Magnets are attracted to and repel other magnets.
Which statement is true about magnetic pole?
The correct answer is North & South poles attract each other . This is because opposites attract. If it were a north & north pole they’d repel each other, same if it were a south & south pole. This is because each magnetic field has a way of attracting two opposite poles (north to south, south to north).
What is H in magnetic field?
The definition of H is H = B/μ − M , where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization. ...
What is magnetic flux density simple definition?
magnetic flux density. A vector quantity measuring the strength and direction of the magnetic field around a magnet or an electric current . Magnetic flux density is equal to magnetic field strength times the magnetic permeability in the region in which the field exists.
How magnetic force is created?
Magnetism is the force exerted by magnets when they attract or repel each other . Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. ... Their movement generates an electric current and causes each electron to act like a microscopic magnet.
Where is magnetic force used?
Computer hard drives use magnetism to store the data on a rotating disk. More complex applications include: televisions, radios, microwave ovens, telephone systems, and computers. An industrial application of magnetic force is an electromagnetic crane that is used for lifting metal objects.
Which describes a magnetic field?
A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials . ... Magnetic fields surround magnetized materials, and are created by electric currents such as those used in electromagnets, and by electric fields varying in time.
What are the 6 types of magnetism?
There are six basic types of magnetization: (1) diamagnetism, (2) paramagnetism, (3) ferromagnetism, (4) antiferromagnetism, (5) ferrimagnetism, and (6) superparamagnetism . Diamagnetism arises from the orbiting electrons surrounding each atomic nucleus.
Which location has the greatest magnetic force?
The magnetic field of a bar magnet is strongest at either pole of the magnet . It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
What type of force is tension?
The tension force is the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends . The tension force is directed along the length of the wire and pulls equally on the objects on the opposite ends of the wire. Return to Top. Spring Force.
Can ever there be a magnet without pole?
(a) Yes, there can be a magnet with no pole e.g. in case of a toroid carrying current.
Does a single magnetic pole exist?
As implied by its name, the magnetic monopole consists of a single pole, as opposed to the dipole, which is comprised of two magnetic poles. ... As yet there is no evidence for the existence of magnetic monopoles , but they are interesting theoretically.
Why is magnetism important?
Maxwell showed mathematically how a changing magnetic field creates a changing electric field (and vice versa). Therefore, magnetism is very important because we use it to create electrical energy . In fact, most of the energy that we use today comes from rotating magnets (see below).
