 # Does Magnetic Force Depend On Sign Of Charge?

## Where is the magnetic field the strongest?

As can be visualized with the magnetic field lines, the magnetic field is strongest inside the magnetic material.

The strongest external magnetic fields are near the poles.

A magnetic north pole will attract the south pole of another magnet, and repel a north pole..

## What are the three right hand rules?

Some would claim that there is only one right-hand rule, but I have found the convention of three separate rules for the most common situations to be very convenient. These are for (1) long, straight wires, (2) free moving charges in magnetic fields, and (3) the solenoid rule – which are loops of current.

## Can magnetic force change the speed of moving charged particle?

The reason is that the magnetic field doesn’t affect the speed is because the magnetic field applies a force perpendicular to the velocity. Hence, the force can’t do work on the particle. As a result, the particle can’t change its kinetic energy. So it can not change the speed.

## What causes a magnetic field?

All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.

## Why is work done by a magnetic field is zero?

Because the magnetic force on a moving charge is perpendicular to the velocity, the work done by a magnetic force is zero. … The coil on the left makes a magnetic field to the right.

## What does magnetic force depend on?

The force acting on an electrically charged particle in a magnetic field depends on the magnitude of the charge, the velocity of the particle, and the strength of the magnetic field.

## What is the right hand rule for magnetic force?

We can remember this diagram using the right-hand rule. If you point your pointer finger in the direction the positive charge is moving, and then your middle finger in the direction of the magnetic field, your thumb points in the direction of the magnetic force pushing on the moving charge.

## What is the first right hand rule?

The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.

## How magnetic field is created?

Magnetic fields are produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin.

## How magnetic forces affect moving charges?

Magnetic forces can cause charged particles to move in circular or spiral paths. Particle accelerators keep protons following circular paths with magnetic force. … The magnetic force is perpendicular to the velocity, and so velocity changes in direction but not magnitude. Uniform circular motion results.

## What kind of magnet can be turned on and off?

An electromagnet is a magnet that works with electricity. It can be switched on and off. The coils are nearly always made of copper wire because copper is such an excellent electrical conductor. Electromagnets have many uses.

## Do magnets have to touch in order to experience magnetic force?

a. No – the magnetic fields just have to touch. A magnetic field is the area around a magnet where a magnetic force is exerted.

## 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).

## Do magnetic fields ever interact with charges?

A stationary charged particle does not interact with a static magnetic field. A charge placed in a magnetic field experiences a magnetic force. … The charge must be moving, for no magnetic force acts on a stationary charge.

## 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.

## Is magnetic force stronger than electric force?

It is never ever stronger than Electrical force. Having said all that, let me keep reminding you that Electrical and Magnetic forces are different manifestations of the same phenomenon. Magnetic Forces are the same as Electrical Forces, taking relativity and frame of reference into account.

## Is a magnets push or pull stronger?

In any magnet, there are areas where the force of magnetism is strongest. … If the north pole of one magnet lines up with the south pole of another, the magnets pull together. If the north pole of one magnet meets the north pole of another (or south meets south), the magnets push apart.

## What are the two magnetic forces?

The most elementary force between magnets, therefore, 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.

## Which electromagnet is the strongest?

The strongest continuous magnetic fields on Earth have been produced by Bitter magnets. As of 31 March 2014 the strongest continuous field achieved by a room temperature magnet is 37.5 T produced by a Bitter electromagnet at the Radboud University High Field Magnet Laboratory in Nijmegen, Netherlands.

## How do you calculate magnetic force?

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

## Why does magnetic field depends on moving charges only?

What is the mechanism by which one magnet exerts a force on another? The answer is related to the fact that all magnetism is caused by current, the flow of charge. Magnetic fields exert forces on moving charges, and so they exert forces on other magnets, all of which have moving charges.