# Oscilliscopes

Discussion in 'Homework Help' started by vineo76, Dec 13, 2004.

1. ### vineo76 Thread Starter New Member

Dec 6, 2004
5
0
I have found out how to measure current through a resistor, but I wonder why the current measures are starting to get way off when the resistance is at about lets say 470ohms. I wonder why the current can't be measured at a certain number of resistance. Does anyone know?

2. ### pebe AAC Fanatic!

Oct 11, 2004
628
3
You don't say how you are measuring the current. Is it by measuring the voltage across the resistor? If so. the current will be proportional to the measured voltage, whatever the resistance value.

Can you provide a bit more detail?

3. ### krgoutham Member

Dec 8, 2004
22
0
Hi
I guess u are the same guy that asked the ammeter question earlier. Did you connect it in series to calculate the amount of current flow through ur circuit??????

4. ### beenthere Retired Moderator

Apr 20, 2004
15,815
282
Hi,

If the current gets wierd as the resistor value decreases, your source is probably not able to supply the necessary current.