We can see that the magnetic force (F) is directly proportional to the current (I) length of wire (L) in the external magnetic field, the external magnetic field magnitude (B), and the sine of the angle , between the current direction in the wire and the external magnetic field.
Is current directly proportional to magnetic field?
Relationship Between Current and Magnetic Field
The strength of a magnetic field is directly proportional to the current flowing. Therefore, if an alternating current is flowing, a magnetic field around the conductor will be produced, that is in phase with the alternating current.
Is force directly proportional to current?
Current is directly proportional to magnetic force for a straight current carrying conductor in a uniform magnetic field. So the force is directly proportional to the size of the current. Practically this means the following: If the current is doubled the force on the conductor will double.
What is the relationship between magnetic force and distance?
Magnetic force obeys an inverse square law with distance. The equation for magnetic force is similar to Coulomb’s Law (if you are familiar with it). But the key point is that the force is inversely proportional to the distance squared (i.e. it obeys an inverse square law with distance).
Does magnetic force depend on sign of charge?
1) depends on the sign of the charge on the particle. … 3) depends on the magnetic field at the particle’s instantaneous position. 4) is at right angles to both the velocity and the direction of the magnetic field.
How magnetic field is increased or decreased?
This change may be produced in several ways; you can change the strength of the magnetic field, move the conductor in and out of the field, alter the distance between a magnet and the conductor, or change the area of a loop located in a stable magnetic field.
How does resistance affect magnetic field?
Resistance is caused by collisions between charge carriers (like electrons) and other carriers or atoms. … As the magnetic fields representing data on the material pass by the wire, the resistance of the wire changes with the magnetic field of the data. This change in resistance changes the current through the wire.
Is force proportional to distance?
The force is proportional to the masses and inversely proportional to the square of the distance.
Is force directly proportional to acceleration?
As we increase the force on an object the acceleration increases proportionally. Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration. … Force is directly proportional to acceleration (force ~ acceleration)
Is pressure directly proportional to area?
Since we found F = PA, we see that the force exerted by a pressure is directly proportional to the area acted upon as well as the pressure itself. The force exerted on the end of the tank is perpendicular to its inside surface. This direction is because the force is exerted by a static or stationary fluid.
Can magnetic force of repulsion act at a distance?
The force exerted by a magnet is called The push or pull of magnetism can act at a distance, which means that the magnet does not have to touch an object to exert a force on it. … Magnets can also repel, or push away, objects. The train in the photograph at the left is called a maglev train.
What factors affect magnetic field?
Magnetic Field Strength for Electromagnets
Then to summarise, the strength or intensity of a coils magnetic field depends on the following factors. The number of turns of wire within the coil. The amount of current flowing in the coil. The type of core material.
Why does magnetic force decrease with distance?
The magnetic field from a wire decreases with distance from the wire. Instead of the field being proportional to the inverse square of the distance, as is the electric field from a point charge, the magnetic field is inversely proportional to the distance from the wire.
Is magnetic force stronger than electric force?
the attractive magnetic force between 2 electrons moving parallel to each other near the speed of light is nearly equal to the repulsize electric force between them.
Why do magnetic fields only affect moving charges?
When charges are stationary, their electric fields do not affect magnets. But, when charges move, they produce magnetic fields that exert forces on other magnets. When there is relative motion, a connection between electric and magnetic fields emerges—each affects the other.
Is magnetic force attractive or repulsive?
Magnetic force, attraction or repulsion that arises between electrically charged particles because of their motion. It is the basic force responsible for such effects as the action of electric motors and the attraction of magnets for iron.