Principle
A uniform electric field E is produced between the charged plates of a plate capacitor. The strength of the field is computer-assisted determined with the electric field strength meter, as a function of the plate spacing d and the voltage U. The potential ø within the field is measured with a potential measuring probe.
Benefits
- Loss-less measurement of electric field strength
- High-sensitive electric field meter also suitable for electrostatic measurement of voltages
Tasks
- The relationship between voltage and electric field strength is investigated, with constant plate spacing.
- The relationship between electric field strength and plate spacing is investigated, with constant voltage.
- In the plate capacitor, the potential is measured with a probe, as a function of position.
Learning objectives
- Capacitor
- Electric field
- Potential
- Voltage
- Equipotential lines