Is Velocity Directly Proportional To Magnetic Field? - Fixanswer

The magnetic force will not change the speed of a moving electron because

the magnetic force is always perpendicular to the velocity

. A moving electron in a uniform magnetic field will undergo uniform circular motion.

What is magnetic field directly proportional to?

Experimentally, it is found that the magnitude B of the magnetic field produced by a long, straight wire is directly proportional to

the current I

and inversely proportional to the radial distance r from the wire as shown below.

Why does magnetic force depend on velocity?

The magnetic force is

always perpendicular to the velocity and to the magnetic field

(since it is given by their cross-product). … There is no force if the particle’s velocity is in the same direction as the magnetic field vector. The force increases with charge, speed, and strength of the magnetic field.

What is the relation between velocity and magnetic field?

The

magnetic force is perpendicular to the velocity

, and so velocity changes in direction but not magnitude. Uniform circular motion results. The component of the velocity parallel to the field is unaffected, since the magnetic force is zero for motion parallel to the field.

How do you find the velocity of a magnetic field?

= magnetic force vector (Newtons, N) q = charge of a moving particle (Coulombs, C)
= particle velocity vector (m/s) v = particle velocity magnitude (m/s)
= magnetic field vector (Teslas, T) …
= angle between velocity and magnetic field vectors (radians)

How is electric field related to velocity?

A charged particle in an electric feels a

force that is independent of its velocity

. Below the field is perpendicular to the velocity and it bends the path of the particle; i.e. changes both direction and magnitude of v. A charged particle in an electric feels a force that is independent of its velocity.

Does magnetic force affect velocity?

The

magnetic force is perpendicular to the velocity

, and so velocity changes in direction but not magnitude. Uniform circular motion results. … The component of the velocity parallel to the field is unaffected, since the magnetic force is zero for motion parallel to the field.

Why magnetic force depends on velocity and electric field force doesn t?

The Lorentz force formula tells us that the magnetic force is zero if the velocity is zero. Figure 8: The reference frame of a nearby stationary charged particle. … In its own reference frame, it is stationary, v=0, therefore it

cannot feel any magnetic forces

which depend only on velocity.

Can a magnetic field change the velocity of a charged particle?

Another way to look at this is that the

magnetic force is always perpendicular to velocity

, so that it does no work on the charged particle. The particle’s kinetic energy and speed thus remain constant. The direction of motion is affected but not the speed.

Is magnetic field directly proportional to radius?

Explanation: The strength of the magnetic field is the magnetic field intensity . … The magnetic field intensity is directly proportional to

the magnetic field flux density

, and the radius of the coil is directly proportional to its area.

Is current proportional to magnetic field?

The magnetic field in space around an electric current is

proportional to the electric current which serves as its source

, just as the electric field in space is proportional to the charge which serves as its source.

Is current directly proportional to magnetic force?

Current is directly proportional to

magnetic force

for a straight current carrying conductor in a uniform magnetic field. So the force is directly proportional to the size of the current. Practically this means the following: … If the current is increased by five times the force will also increase by five times.

What increases the force of a magnetic field?

The force on a given length of wire in a magnetic field increases when:

the current in the wire increases

.

the strength

of the magnetic field increases. the length of conductor in the field is increased.

Where is the magnetic field the strongest?

But we know the field inhabits all the space around the magnet. It is strongest at

the poles

. So, what are magnetic poles? Magnetic poles are opposite ends of a magnet where the magnetic field is strongest.

Is magnetic force frame dependent?

Since the magnetic effect of a charged particle is an effect that depends on the relative motion between the particle and the “medium,”

the presence of a magnetic field

(and its detection), is frame dependent!