When a 1.0-m length of metal wire is connected to a 
Battery,a current of 
Flows through it.What is the diameter of the wire? The resistivity of the metal is 2.24 × 10-8 Ω ∙ m.
Definitions:
Dopamine Synapses
The junctions between neurons where dopamine, a neurotransmitter associated with pleasure and reward, is transferred.
Addictive Substances
Substances that can lead to addiction, characterized by a compulsive need to use despite harmful consequences.
Biologically Related
Being biologically related means sharing genetic material with another individual, typically through blood relations such as parent-child or siblings.
Alcoholic
A person who suffers from alcoholism, a chronic disorder characterized by the compulsive and uncontrolled consumption of alcohol.
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