Help me!!! Asap!!!

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17rkearns

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Ok... I have tried every thing and i have noooo idea how to do this or what i'm supposed to do for this question!! Please help ASAP!!!
The voltage, V, across any part of a circuit is the product of the current I and the resistance R. Write a formula to find the voltage. Solve the formula for R. I AM SOOO CONFUSED!!! I LUV THIS SITE!!!:shock:
 
17rkearns said:
Ok... I have tried every thing and i have noooo idea how to do this or what i'm supposed to do for this question!! Please help ASAP!!!
The voltage, V, across any part of a circuit is the product of the current I and the resistance R. Write a formula to find the voltage. Solve the formula for R. I AM SOOO CONFUSED!!! I LUV THIS SITE!!!:shock:
Click to expand...

So you need to turn words into a mathematical formula. Do you know what "is" and "product" mean in a mathematical sense? V, I and R are just your variables.
 
mmm4444bot said:
Show me one thing that you've tried, and I will help you.

Also, tell me what you think about, when you read the word "product" in the given information.
Click to expand...
Well for product I thought that it meant product as in multiplication. I kinda just figured out that the formula would be V=IR... But I have know idea what the "solve the formula for R" is supposed to mean at all!!! I missed a day in school and my teacher already expects me to know this!!!
 
17rkearns said:
I kinda just figured out that the formula would be V=IR
Click to expand...

That's kinda how it goes. Easy, huh? :cool:


I have know idea what the "solve the formula for R" [means]
Click to expand...

They want you to rearrange the formula for V into a formula for R.

In other words, they want you to carry out some operation on both sides of the equation V=I*R so that the resulting equation has symbol R all by itself on one side.
 
mmm4444bot said:
That's kinda how it goes. Easy, huh? :cool:




They want you to rearrange the formula for V into a formula for R.

In other words, they want you to carry out some operation on both sides of the equation V=I*R so that the resulting equation has symbol R all by itself on one side.
Click to expand...
are you kidding??? The way they word it is sooo confusing!!!! But solving the formula still means that right??? I mean I'm pretty sure that that makes sense now that you say that!!!
 
Rephrase

17rkearns said:
are you kidding?

Nope.

But solving the formula still means that right?

Yes; "solving a formula" for some specific variable means using algebra steps on both sides of an equation to isolate the symbol which represents that variable.
Click to expand...

So, what do you get?
 
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OH!! That's right !!! I remember the isolate the variable!! So you would get R= V/I... right???
 
R = V/I is correct.

You will work with many formulas like this, rearranging them, while working on future word problems.

Another famous formula involving three numbers is the relationship between speed, elapsed time, and distance traveled, for objects moving at a constant speed.

Distance traveled is the product of constant speed and elasped time.

d = r*t

You can solve this equation for t, to find a formula that gives the time that it takes in terms of distance traveled and speed.

d/r = t

You can solve it for r, too, to find a formula that gives the speed, when you know the distance and the time.

d/t = r
 
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