A simple electrical circuit consisting of 3 small batteries, a piece of wood, a voltmeter and a lamp. With a piece of wood in position, the circuit is open and the lamp is not lit. See image SS21318310. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Alexandre Dotta |
Taille de l’image : | 4620 px × 2952 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |