- #1

CoolDude420

- 201

- 9

**Homework Statement::**This isn't a homework question but just a theoretical questions.

*[mentor’s note: moved to a more appropriate forum for theoretical questions.]*

I know that current is defined as the rate of change of charge per unit time.

i = dq/dt

This makes sense for a capacitor which stores charge. If we define the q as being the total charge stored on the capacitor, then sure, the rate of change of the total q stored on the capacitor will tell you how much current the capacitor is receiving.

However, in this case of a resistor, this confuses me. A resistor does not store charge. If I have a DC voltage source connected across a resistor, the resistor technically should be receiving the same amount of charge for all time, hence the rate of change of charge dq/dt will always be 0, thus, i = dq/dt = 0. Does this mean that the resistor is receiving 0 current?

Where is the flaw in my understanding? I think I might be confusing instantaneous charge flowing versus total charge?

**Relevant Equations::**i = dq/dt

V = IR

N/A

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