## What is a electromagnetic force in physics?

The electromagnetic force, also called the Lorentz force, acts between charged particles, like negatively charged electrons and positively charged protons. Opposite charges attract one another, while like charges repel. The greater the charge, the greater the force.

## What is F L in physics?

F/l is the force per unit length between two parallel currents I1 and I2 separated by a distance r. The force is attractive if the currents are in the same direction and repulsive if they are in opposite directions. This force is responsible for the pinch effect in electric arcs and plasmas.

**What is the equation for magnetism?**

It is found to be F=Bilsinθ F = Bi l sin θ , where ℓ is the length of the wire, i is the current, and θ is the angle between the current direction and the magnetic field.

**Is normal force electromagnetic?**

This force is called the normal force. The name ‘normal’ means perpendicular to the surface. The normal force arises from the electromagnetic force; specifically, the electrons in the book push against the electrons in the table.

### What are the 7 main forces?

Action-at-a-Distance Forces

- Applied Force.
- Gravitational Force.
- Normal Force.
- Frictional Force.
- Air Resistance Force.
- Tension Force.
- Spring Force.

### What are the 5 forces in physics?

The forces controlling the world, and by extension, the visible universe, are gravity, electromagnetism, weak nuclear forces, and strong nuclear forces.

**Is normal force repulsive?**

The lack of normal force shows a case where Coulumb Friction doesn’t really work. It is due to the fact intermolecular forces are generally attractive but when the molecules get too close with each other they become repulsive.

**How to calculate the force of an electromagnet?**

We calculate the magnetomotive force F for a solenoid, an inductor, or an electromagnet using the formula: F = ϖ · I where F is the magnetomotive force, ω is the number of turns in the coil, and I is the electric current in the conductor.

#### How do you calculate the force between two magnets?

To calculate the force between the two magnetics: one must integrate over the field structures, so as to examine the connecting field lines. The force is the sum of the tension forces (B^2/8 pi) on the field lines between the two.

#### What is the formula for magnetic force?

If using this calculator for a 3D vector, then the user enters in all fields. The magnetic force is calculated according to the formula, F= qv x B. This means that the cross product of the product of the charge and the velocity vector with the magnetic field vector gives the resultant.

**What is unit of measurement for electromagnetic force?**

As with all forces, electromagnetic force is measured in Newtons (N). The constant k has a specific value, 9 × 10 9 N m 2 / C 2 . Charge is measured in coulombs (C), and you input the sign of the charge (+ or −) along with the strength, so the equation has a positive value for repulsion and a negative one for attraction.