7 min read
This study guide covers electric current, focusing on its definition as the flow of charge, driven by electric potential difference (voltage). It explores the movement of charges, including drift velocity, and introduces the concepts of current density and conventional current direction. Key equations like I = nqvA and J = nqv are explained. The guide also emphasizes the difference between resistivity and resistance, and provides practice questions covering these core concepts.
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Question 1 of 10
What is electric current primarily defined as? 🤔
The force exerted by a magnetic field on a charge
The flow of electric charge through a conductor
The potential difference across a resistor
The resistance to the flow of charge