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Voltage and current in a parallel connection of solar cells

Product No: P9511400

Principle

The pupils should examine a parallel connection of solar cells by measuring the open circuit voltage, U_ges, and the short-circuit current, I_ges.

Using a connection in parallel, greater currents can be reached.

Furthermore, the currents I₁ and I₂ at each solar cell will be measured. Using this information and I_ges, the relation relation for the parallel connection of the solar cells can be derived: I_ges = I₁ + I₂.

The voltage at each solar cell is equal to the open circuit voltage, U_ges: U_ges = U₁ = U₂.

Task

What happens when you connect two solar cells in parallel?

Materiallist (Excerpt)	Product	Amount
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V	13505-93	1
DMM with NiCr-Ni thermo couple	07122-00	1
On-off switch module, SB	05602-01	1
Socket module for incandescent lamp E10, SB	05604-00	1
Interrupted connector module, SB	05601-04	2
Junction module, SB	05601-10	4
Solar cell 2.5 x5 cm, with plugs	06752-11	2
Straight connector module, SB	05601-01	2
Angled connector module, SB	05601-02	4
Holder for solar cell 2.5 x5 cm, with plugs	06752-12	2
Filament lamp 6 V/3 W, E10, 10 pcs.	35673-03	0,1
Connecting cord, 32 A, 500 mm, red	07361-01	2
Connecting cord, 32 A, 500 mm, blue	07361-04	2
Double sockets,1 pair,red a.black	07264-00	1

Literature for this article als follows

Title	Product	Language
interTESS DVD Applied Sciences, Erneuerbare Energie	01081-00
interTESS DVD, vollständige Version mit allen Versuchen Physik, Chemie, Biologie, Applied Sciences	01100-00