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What is the formula for force between two magnets?

What is the formula for force between two magnets?

Hint: We know that the force between two magnetic poles is classically given by the equation $F = \dfrac{{{\mu _0}{m_1}{m_2}}}{{4\pi {r^2}}}$ . Use this equation for when the distance increases by $n$ times and when the distance reduces by $\dfrac{1}{{{n^{th}}}}$ times.

How do you find the force due to a magnetic field?

Magnetic Force

  1. The force is perpendicular to both the velocity v of the charge q and the magnetic field B.
  2. The magnitude of the force is F = qvB sinθ where θ is the angle < 180 degrees between the velocity and the magnetic field.
  3. The direction of the force is given by the right hand rule.

What is the relationship between force and magnetic field?

The magnetic force F is proportional to the charge and to the magnitude of velocity v times the magnetic field B. Depending on the initial orientation of the particle velocity to the magnetic field, charges having a constant speed in a uniform magnetic field will follow a circular or helical path.

What is the force between two magnetic poles?

The force of interaction between two stationary magnetic poles is inversely proportional to the square of the distance between the two poles. The force between the two poles acts along the straight line joining the two poles. Like poles repel each other and the unlike poles attract each other.

How do you find the force of an electric field?

The electric field strength (E) is defined as the amount of force exerted upon a test charge per unit of charge on the test charge (q). That is, E = F / q. The electric force (F) depends upon a number of variables as described by Coulomb’s law.

What are the formulas needed in solving the magnetic force?

From this point of view, the magnetic force F on the second particle is proportional to its charge q2, the magnitude of its velocity v2, the magnitude of the magnetic field B1 produced by the first moving charge, and the sine of the angle theta, θ, between the path of the second particle and the direction of the …

What is the magnetic field formula?

The magnetic field formula contains the constant^{\mu_{0}}. This is known as permeability of free space and has a value^{\mu}_{0} = 4\pi \times 10^{-7} (T \cdot m/ A). Besides, the unit of a magnetic field is Tesla (T).

How is magnetic force measured?

  1. Put a material in a magnetic field.
  2. Run a current through this material.
  3. The magnetic field will create a “sideways” change in electric potential across the material – which you can measure.
  4. Using this change in potential and the size of the material, you get the magnitude of the magnetic field.

What is the formula of magnitude of force?

First of all, force is a vector quantity. It has direction and magnitude. Now the magnitude of the force can be calculated by finding out the amount of acceleration it offers to a body, Using F= ma.

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

And here the second key feature enters; the magnetic field of permanent magnets can be calculated from the equivalent surface current density I = dI/ds = Br/µ0 that is proportional to the remanent magnetic field Br of the permanent magnet material.

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