Question on Electric Potential

In summary, the first conversation discusses the necessary voltage needed to accelerate a proton with a radius of 1.2E-15m to penetrate a silicon nucleus with a charge of +14e and a radius of 3.6E-15m, assuming the potential is that for point charges. The second conversation involves the Bohr model of the hydrogen atom and addresses the potential at the electron's orbit due to the proton, the kinetic energy of the electron, and the total kinetic energy of the electron in its orbit.
  • #1
claran
1
0
1. How much voltage must be used to accelerate a proton (radius 1.2E-15m) so that it has sufficient energy just to penetrate a silicon nucleur? A silicon nucleus has a charge of +14e and its radius is about 3.6E-15m. Assume the potential is that for point charges.

2. In the Bohr model of hydrogen atom, an electron orbits a proton (nucleus) in a circular orbit of radius 0.53E-10m.
(a) What is the potential at the electron's orbit due to the proton?
(b) What is the kinetic energy of the electron?
(c) What is the total kinetic energy of the electron in its orbit.

Thanks for helping!
 
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  • #2
1) How does the proton penetrate the silicon? What does it need to have, to be able to do that? How can you give it that?

2) You need to put some thoughts/attempts out before anyone can help you.
 

What is electric potential?

Electric potential is the amount of electric potential energy per unit charge at a specific point in an electric field. It is a measure of the work required to move a unit charge from a reference point to the specific point in the electric field.

How is electric potential different from electric field?

Electric potential is a scalar quantity, meaning it only has magnitude, while electric field is a vector quantity with both magnitude and direction. Electric potential is also dependent on the position in the electric field, while electric field is not.

What is the unit of electric potential?

The unit of electric potential is volts (V), which is equivalent to joules per coulomb (J/C).

How is electric potential related to electric potential energy?

Electric potential energy is the energy associated with a charged particle in an electric field. It is directly proportional to the electric potential, which means that as the electric potential increases, so does the electric potential energy of the charged particle.

What are some real-life applications of electric potential?

Electrical circuits, batteries, and generators all rely on the concept of electric potential to function. Electric potential is also important in understanding the behavior of lightning and how it is attracted to tall objects.

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