Moment of inertia:
, where A is the area of the wire, vd is the drift speed.
From the law of conservation of charge, the current that enters into the 1 mm segment of the wire is equal to the current in the 2mm segment of the wire.
The two wires in the figure (Figure 1) are made of the same material.
(a) What is the current in the 2.0-mm-diameter segment of the wire?
(b) What is the electron drift speed in the 2.0-mm-diameter segment of the wire? (in μm/s)
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Microscopic View of Current concept. You can view video lessons to learn Microscopic View of Current. Or if you need more Microscopic View of Current practice, you can also practice Microscopic View of Current practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Reyes' class at UCF.