- #1
WWCY
- 479
- 12
Homework Statement
Homework Equations
I = nqVA
J = E/ρ
J = I/A
The Attempt at a Solution
The underlying assumption was that current was constant across all 3 bits of the conductor, and thus answer is b.
The concept I can't grasp is this: Why is current constant? Shouldn't a smaller A mean smaller current as well?
Is there a 'force' shoving more q through a smaller A to compensate and is there a mathematical way to show that current is indeed independent of area?
Help is greatly appreciated!