How do you calculate magnetic force with current?

We can derive an expression for the magnetic force on a current by taking a sum of the magnetic forces on individual charges. (The forces add because they are in the same direction.) The force on an individual charge moving at the drift velocity vd is given by F = qvdB sin θ.

How do you calculate the magnetic force of a permanent magnet?

If you want to know the force on an electric charge then you must apply the Lorentz formula. It depends on the magnetic field generated by a permanent magnet: In uniform magnetic field the force acting on magnetic moment m is zero. However there is non-zero torque t: t=mxB (in vector notation).

How do you find the magnetic force between two magnets?

The most elementary force between magnets is the magnetic dipole–dipole interaction. If all of the magnetic dipoles that make up two magnets are known then the net force on both magnets can be determined by summing up all these interactions between the dipoles of the first magnet and that of the second.

What is magnetic force in current carrying wires?

The magnetic force on a current-carrying wire through a magnetic field is given by F = IL x B. When a current is passed through a magnetic field, the magnetic field exerts a force on the wire in a direction perpendicular to both the current and the magnetic field.

When a current carrying coil is placed in the magnetic field?

When a current carrying coil is placed in a uniform magnetic field of induction B, then a torque τ acts on it. If I is the current, n is the number of turns and A is the face area of the coil and the normal to the coil makes an angle θ with B, Then.

Which force is a magnetic force?

The magnetic force is a consequence of the electromagnetic force, one of the four fundamental forces of nature, and is caused by the motion of charges. Two objects containing charge with the same direction of motion have a magnetic attraction force between them.

How is magnetic force measured?

The intensity of a magnetic field, measured in Gauss or Teslas (10,000 Gauss = 1 Tesla), is also a common measurement of a magnets strength as this is a representation of the density of a magnetic field produced by a magnet, known as flux density.

What is the mathematical relationship between magnetic force and distance between the two magnets?

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).

When does a coil experience an induced current when magnetic field varies?

A coil experiences an induced current when the magnetic field passing through it varies. (a) When the magnet moves toward the coil the current is in one direction. (b) No current is induced while the magnet is held still.

How do you find the magnetic force?

The magnetic force depends upon the charge of the particle, the velocity of the particle and the magnetic field in which it is placed. The direction of the magnetic force is opposite to that of a positive charge. The magnitude of the force is calculated by the cross product of velocity and the magnetic field, given by q [ v × B ].

How does magnetic force affect the weight of a wire loop?

Since the wire loop is stationary the magnetic force acts on the permanent magnet assembly causing its weight to either increase or decrease depending on the direction of the current and the orientation of the magnetic field. The change in the magnet assembly’s weight is due to the magnetic force given by Equation 5. Figure 5.

What is the magnetic force in a straight current carrying rod?

The resultant force is thus perpendicular to the direction of the velocity and the magnetic field, the direction of the magnetic field is predicted by the right-hand thumb rule. In the case of static charges, the total magnetic force is zero. Let us now discuss the force due to the magnetic field in a straight current-carrying rod.