Lesson: Electric Current as Rate of Flow of Charge
In this lesson, we will learn how to express electric current in terms of the rate of net movement of electric charge past a point in a conducting circuit.
Sample Question Videos
Worksheet: 6 Questions • 4 Videos
The charge that flows through a point in a wire as a function of time is modeled as , where C and s.
What is the initial current through the wire at time s?
Find the magnitude of the current at the instant T.
At what value of will the current be reduced to exactly ?
The current through a conductor is modeled as , where is measured in seconds and A. Find the number of electrons flowing through the conductor from to .
A conductor carries a time-dependent current that decreases exponentially. The instantaneous current is modeled as , where corresponds to the time the current has persisted for, A is the current at , and the time constant . How much charge flows through the conductor between and ?