Electricity/ Electronics/ Electrostatics

Discharging at points

Principle

The pupils see that charges can be transferred in the air by a spark and that these sparks appear primarily at the tips and edges of objects.

Task

Charges are transmitted by sparks. Show that even without contact b ...

The simple circuit

Voltage measurement

Current measurement

Conductors and non-conductors

Changeover switches and alternating switches

AND and OR circuits

Series and parallel connection of sources of voltage

The safety fuse

The bimetallic switch

Principle

A bi-metal strip comprises two metal strips which are laminated together and have different thermal expansion coefficients. When warmed the strip flexes toward the side with the lower expansion coefficient. In so doing, it can act as a switch in the el ...

Resistance in a circuit

Ohm's law

Current and resistance in a parallel connection

Current and resistance in a series connection

Voltage in a series connection