- Sun Feb 19, 2017 7:49 pm
#193488
My son understands currents better than me, but he's also stumped on this. He's doing a science experiment testing the current of a 9V battery with different resistors in the circuit. Now from what we can tell, the current of a 9v battery with no resistance should be around 500mA.
When he used a 10ohm resistor, he got around 300mA.
But when you put the numbers into an ohm's law calculator, it comes up with 900mA.
We don't understand how this can be true. How can it have a number higher than the usual current of 500mA?
Hoping one of you smarty-pants out there can help us with this.
When he used a 10ohm resistor, he got around 300mA.
But when you put the numbers into an ohm's law calculator, it comes up with 900mA.
We don't understand how this can be true. How can it have a number higher than the usual current of 500mA?
Hoping one of you smarty-pants out there can help us with this.