Speed of a Proton in a Uniform Electric Field

The video tutorial explains the electric field between parallel plates and how to calculate the speed of a proton moving between them. It discusses different problem-solving approaches, focusing on the conservation of mechanical energy. The tutorial provides a step-by-step calculation of the proton's speed using given values for charge, electric potential difference, and mass. The importance of considering the direction of the electric field and its impact on potential energy is highlighted. The tutorial concludes with the final speed calculation and a brief discussion on the significance of the result.

What is the direction of the electric field between two parallel plates with opposite charges?

• From the negative plate to the positive plate

• Horizontally between the plates

• From the positive plate to the negative plate

• There is no electric field between the plates

Why is gravitational potential energy considered negligible for subatomic particles in this scenario?

• Because the gravitational force is stronger than the electric force

• Because gravitational potential energy is always zero for subatomic particles

• Because the change in gravitational potential energy is much smaller than the change in electric potential energy

• Because the proton is not affected by gravity

What is the only type of mechanical energy the proton has at plate A?

• Elastic potential energy

• Electric potential energy

• Gravitational potential energy

• Kinetic energy

What is the charge of a proton used in the calculations?

• 1.67 * 10^-26 Coulombs

• 1.67 * 10^-27 Coulombs

• 1.6 * 10^-18 Coulombs

• 1.6 * 10^-19 Coulombs

What is the calculated speed of the proton as it reaches plate B?

• 48 kilometers per second

• 480 kilometers per second

• 480 meters per second

• 48 meters per second