Question #31c98
1 Answer
Internal resistance is an intrinsic characteristic of any electric component from a circuit.
Explanation:
Electrical resistance refers to the opposition of a material to free charges passing through it. This takes to heating or light emission (giving rise to electric resistances and light bulbs, for instance).
Some other components are not thought to oppose to electric current, such as voltmeters, ammeters or cables. However, their own molecular structure makes it impossible, due to electrical forces between atoms and molecular networks (electrostatic repulsion, atomic levels of energy...).
That's why they have a small but not negligible internal resistance, due to interactions between charges and materials, which cause some losses on energy and electric intensity.
