Electrical power and work

Principle

The power of an electrical appliance can be qualitatively estimated from its brightness, the heat radiated, loudness etc.

In this experiment, the light emitted from the filament lamps is used as a measure of electric power. The students can easily understand that the power of two identical lamps is double that of one when they both have the same brightness, and that n lamps correspond to n times the power of one.

The experiment consists of two parts, by reason of P ~ U for I = const. and P ~ I for U = const.

Benefits

• No additional cable connections between the building blocks needed - clear arragned and quick setup
• Contact saftey due to puzzle blocks system
• Corrosion-free gold plated contacts
• Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside

Benefits

• No additional cable connections between the building blocks needed - clear arragned and quick setup
• Contact saftey due to puzzle blocks system
• Corrosion-free gold plated contacts
• Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside

Tasks

Which quantities are electric power and electric work dependent on?

Investigate the dependence of electric power on current and voltage by connecting filament lamps in series and in parallel.