- #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!