For the first question, a better answer is: "Resistance in Parallel Circuits

[stickplot]

ok this is a simple question and i have the idea but just not 100% sure
If two legs of a parallel circuit have about the same about amount of current, what can you say about the resistance of each of these legs?

My answer is that both legs most probable have the same object, there resistance would be very alike

any corrections?

Another question was


Paul’s Super Marco video game uses batteries that produce 3 V. If the circuitry produces a resistance of 15 Ω, how much current is generated in the game?

I came up with
I=v/r
I=3/15
.2=3/15
.2 current generated in game
but...
on the rubric for the question it says
Reversing Ohms and Volts in formula (15/3)=10 points
im not quite sure what they mean by that any help would be great
Thanks!

 

[bjret]

Look at using conductance (G). G=1/R=I/V. Also, Wikipedia is a good place to find general information.

 

[sir-pinski]

Your answer for the first question is partially correct. In a parallel circuit, the resistance of each leg is different but the total current is divided between them. So, in this case, both legs may have the same current, but their resistance values would not be exactly the same.

For the second question, your answer is correct. The formula I=V/R is used to calculate current in a circuit. However, the rubric may be referring to reversing the formula to solve for resistance instead. So, it would look like R=V/I. This may just be a different way to approach the problem, but your answer is still correct.