Current is not used up

01
The tempting model
Assuming less current remains after each resistor in a series loop.
02
Why it feels right
Resistors 'use energy,' so they seem to consume current.
03
Where it breaks · how to catch it
You draw shrinking current arrows around a one-loop series circuit.
04
The correct model
Charge is conserved. In a single series path, the same current passes through every element; resistors reduce electric potential energy per charge, not the amount of charge per second.
05
Repair · see it, then test it
worked example Two bulbs are in series. Is current smaller after the first bulb?
Tempting move
Yes, the first bulb uses some current.
Correct move
No, the same current flows through both bulbs.
Test the repair CIR-05 · transfer

In one unbranched loop, 0.30 A enters a resistor. What current leaves it in steady state?
0 A Less than 0.30 A 0.30 A More than 0.30 A

Make a fresh prediction before referring to the worked example.