What is the current through resistor 2 in a series circuit?

[alan1592]

Homework Statement

First problem is a series circuit with 3 resistors. R1,R2,R3 is 3.0 ohms. This is all powered by a 3.0 V battery.

What is the current threw resistor 2?

Homework Equations

V=IR

The Attempt at a Solution

3.0=I(3.0)

Divide both sides by 3.0 and I got 1
.. the correct answer is 0.33 OHMs

 

[Lunat1c]

First of all, the units of current are Amps. I also believe that you misread the question. The total resistance is not 3ohms, instead EACH resistor has a resistance of 3 ohms. So you need to find the equivalent series resistance first, and then apply ohm's law and get the correct answer of 0.33A.

 

[johnnyies]

erm. . . check your solutions, current is not measured in Ohms.

First, find equivalent resistance, and remember that current thru a series of resistors is the same.

 

[alan1592]

Ok I got the right answer. I got the total resistance and divide it by the volts and i got the current. Thanks guys! What if I have another question on this same sort of problem do i make another thread? Or should i just ask here?