How do you calculate the speed of an electron in an electric field?

The electron starts from rest (near enough) so the kinetic energy gained is given by ½mv 2 where m is its mass and v is its speed. For an electron gun with a voltage between its cathode and anode of V = 100V the electron will have a speed of about v = 6 × 10 6 m/s.

What is the path of an electron moving perpendicular to a uniform electric field?

The trajectory of an electron when it moves perpendicular to the electric field is parabolic.

How does the electric potential due to a point charge depend on the distance from the charge?

Electric Potential V of a Point Charge The potential at infinity is chosen to be zero. Thus V for a point charge decreases with distance, whereas E for a point charge decreases with distance squared: E=Fq=kQr2 E = F q = k Q r 2 .

Why does an electron traveling perpendicular to a uniform magnetic field follow a circular path?

Since the magnetic force is perpendicular to the direction of travel, a charged particle follows a curved path in a magnetic field. The magnetic force is perpendicular to the velocity, so velocity changes in direction but not magnitude. The result is uniform circular motion.

How does potential vary with distance?

Actually, electric potential decreases as you move farther from a charge distribution. That’s because like charges repel each other, so it takes more and more energy to move the charges together the closer you get.

How do you find the electric field strength with distance and charge?

The electrostatic force exerted by a point charge on a test charge at a distance r depends on the charge of both charges, as well as the distance between the two. The electric field E is defined to be E=Fq E = F q , where F is the Coulomb or electrostatic force exerted on a small positive test charge q.

What is the speed of an electron whose de Broglie wavelength is 1 nm?

So, we get the speed as 7.28×106m/s and the potential difference to be 150 volts.