# Which of the following must be the condition for an electric charge to have magnetic field around it?

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Electric charges can experience a magnetic force if two conditions are met: The charge must be moving through a magnetic field. The velocity of the charge cannot be parallel (or antiparallel) to the direction of the magnetic field.

## What are conditions required for a charge in a magnetic field to experience a magnetic force?

1. The charge must be moving. 2. The velocity of the charge must have a component that is perpendicular to the direction of the magnetic field.

## What is required for a magnetic field to occur?

Although atoms often have many electrons, they mostly ‘pair up’ in such a way that the overall magnetic field of a pair cancels out. Two electrons paired in this way are said to have opposite spin. So if we want something to be magnetic we need atoms that have one or more unpaired electrons with the same spin.

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## Under what conditions does a magnetic field do work on a charged particle?

A particle with constant velocity will move along a straight line through space. If a charged particle’s velocity is completely parallel to the magnetic field, the magnetic field will exert no force on the particle and thus the velocity will remain constant.

## What are the two conditions required for an induced magnet to be created?

Unlike a permanent magnet, an induced magnet only becomes a magnet when it is placed in a magnetic field. … they are only attracted by other magnets, they are not repelled. they lose most or all of their magnetism when they are removed from the magnetic field.

## When a charged particle moves through a magnetic field it suffers a change in?

When a charged particle enters a magnetic field at a direction perpendicular to the direction of motion, the path of the motion is circular. In circular motion the direction of velocity changes at every point (the magnitude remains constant). Therefore, the tangential momentum will change at every point.

## When a charged particle moves through a magnetic field the direction of the magnetic force on the particle at a certain point is?

The direction of the magnetic force on a moving charge is perpendicular to the plane formed by v and B and follows right hand rule–1 (RHR-1) as shown. The magnitude of the force is proportional to q, v, B, and the sine of the angle between v and B.

## What causes a magnet to have a magnetic field?

The magnetic field is the area around a magnet that has magnetic force. All magnets have north and south poles. … 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.

## What must happen for an electromagnet to have a magnetic field?

What must happen for an electromagnet to have a magnetic field? … It must be lined up with earths magnetic field. It must be connected to an electrical source.

## What causes the changing electric field and magnetic field in charge?

Feedback loop

the electric and magnetic fields are generated by moving electric charges, the electric and magnetic fields interact with each other, the electric and magnetic fields produce forces on electric charges, the electric charges move in space.

## What is the work done by magnetic field on a moving charge?

No work is done by the magnetic field on the moving charge.

## What is the force on charge particle in magnetic field?

The magnetic force on a charged particle q moving in a magnetic field B with a velocity v (at angle θ to B) is F=qvBsin(θ) F = qvBsin ( θ ) .

## When a charged particle moves in a uniform magnetic field which of the following always remains constant?

(1), when a charged particle moves perpendicular to the uniform magnetic field, the magnetic force will act perpendicular to the velocity at every instant which makes the particle move in a circular path with constant velocity v. Thus, the magnitude of velocity remains same, but the direction changes.