Work to Move a Charge in an Electric Field in Electron Volts

The video tutorial explains the concept of electric potential energy and how work done by an external force affects a charge. It introduces the electron Volt (eV) as a unit of energy commonly used in atomic and nuclear physics. The tutorial demonstrates how to calculate the work done on a proton when it moves through an electric potential difference of 1 Volt, converting the result into Joules. It also clarifies that despite its name, the electron Volt is a unit of energy, not electric potential, and is used for positive energy values.

What happens to the electric potential energy of a charge when work is done on it by an external force?

• It remains constant.

• It doubles.

• It decreases.

• It changes.

What is an electron Volt (eV) primarily used to measure?

• Electric potential

• Current

• Energy

• Charge

How is an electron Volt defined?

• The energy a charge gains or loses when moved through a potential difference of 1 Volt

• The current flowing through a circuit

• The charge of an electron

• The potential difference across a resistor

What is the charge on a proton?

• 9.1 * 10^-31 coulombs

• 1.0 coulombs

• 1.6 * 10^-19 coulombs

• 1.6 * 10^19 coulombs

Why is the term 'electron Volt' considered a misnomer?

• Because it is a unit of charge

• Because it is a unit of energy

• Because it is a unit of current

• Because it is a unit of electric potential