Here are notes to assist students in using the IB Physics Data Booklet. These notes will be added to and arranged in syllabus order during the year as other topics are taught in schools.
Topic 10 Fields
- Electrostatic potential due to a single point charge, . Enter the sign of the charge when substituting for q.
- Electrostatic potential energy of two point charges, . Enter the sign of each charge when substituting for q. Negative potential energy means the charges attract and positive work must be done to separate the system to a state where the charges do not influence each other.
- Electric field strength due to a single point charge, . Enter the sign of the source charge when substituting for q. A negative field value means towards the source charge, a positive value means away.