setTimeout(function(){ window.print(); },500)
 

Technical data


Ohm's law with Cobra SMARTsense

Article no: P1372469

Principle

Ohm's law states that the strength of the electric current I flowing through an object is proportional to the electric voltage U. The proportionality factor here is the so-called electric resistance R. The proportionality factor here is the so-called electrical resistance R.

Benefits

  • Particularly comprehensible and didactically prepared description of the experiment (reference to everyday life, etc.) incl. protocol questions.
  • Future-oriented teaching: Integration into digital science lessons with tablets or smartphones.
  • Increased motivation among students through use of the intuitive measureAPP.
  • Increased media literacy.
  • No additional cable connections between the modules necessary - clearer and faster set-up.
  • contact safety due to puzzle-like interlocking building blocks.
  • Hard gold-plated, corrosion-resistant contacts
  • Double learning success: electrical circuit diagram visible on the upper side and real components on the lower side

Tasks

What is the relationship between voltage and current?

Determine a series of pairs of measured values for voltage and current in a circuit and use them to investigate the relationship between U and I.

Learning Objectives

Students should first identify Ohm's law I ∼ U based on the measured values they have determined.

Then they should also find the condition R = constant for the validity of this law.

Scope of delivery

Angled connector module, SB 05601-02 2
Interrupted connector module with sockets, SB 05601-04 2
Angled connector module with socket, SB 05601-12 2
On-off switch module, SB 05602-01 1
Socket module for incandescent lamp E10, SB 05604-00 1
Resistor module 50 Ohm, SB 05612-50 1
Resistor module 100 Ohm, SB 05613-10 1
Filament lamps 12V/0.1A, E10, 10 pieces 07505-03 1
PHYWE Power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A 13506-93 1
Cobra SMARTsense Voltage - Sensor for measuring electrical voltage ± 30 V (Bluetooth + USB) 12901-01 1
Cobra SMARTsense Current - Sensor for measuring electrical current ± 1 A (Bluetooth + USB) 12902-01 1
Connecting cable, 32 A, red, various lengths 07360-01 1
Connecting cable, 32 A, blue, various lengths 07360-04 1
Connecting cable, 32 A, red, various lengths 07361-01 2
Connecting cable, 32 A, blue, various lengths 07361-04 2
measureAPP - the free measurement software for all devices and operating systems 14581-61 1

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com