Calculating Current in a Circuit

[wakejosh]

Homework Statement

you measure a 20v potential difference across a 5 ohm resistor. what is the current?

The Attempt at a Solution

20 v/5 ohms = 4 v

is this correct? thanks.

 

[drpizza]

No, not correct; your units are wrong
(why would a volt divided by an ohm be a volt?)
And, if you're looking for current, what is the SI unit for current?

Otherwise, it's fine. Personally, I prefer to see the equation you used before you plug in values.

 

[wakejosh]

typo, meant to put:

20 V / 5 ohms = 4 A