Question
What is the resistance of a coffee maker that draws a current of 5.0A from 117V source?
What resistance would have to be added in parallel with the same coffee maker to increase the current to 15.0A?
Okay, so for the first part I got 23.4 Ohms since R=V/I, but I don't really understand the second question. Like, I understand what I'm suppossed to do, but I don't know how. I woul really appreciate some help with this. Thanks in davance. :)
What resistance would have to be added in parallel with the same coffee maker to increase the current to 15.0A?
Okay, so for the first part I got 23.4 Ohms since R=V/I, but I don't really understand the second question. Like, I understand what I'm suppossed to do, but I don't know how. I woul really appreciate some help with this. Thanks in davance. :)
Answers
Right on the first part.
Ok, you want a total resistance of 15ohm, you have one 23.4ohm.
1/15=1/R+1/23.4
solve for R
Ok, you want a total resistance of 15ohm, you have one 23.4ohm.
1/15=1/R+1/23.4
solve for R
oh! So, the resistance has to equal the total current, right?
because, I think that's what was messing me up. I figured I'd need to use the formual you used, but I just wasn't sure how. Oh, this is really easy now that I get it, thank you so much for clearing this up! :D
because, I think that's what was messing me up. I figured I'd need to use the formual you used, but I just wasn't sure how. Oh, this is really easy now that I get it, thank you so much for clearing this up! :D
bobpursley
oops. totally disregard my response. I read it quickly and thought the 15 was total resistance.
Total resistance will be 117/15 ohms
so
15/117=1/23.4 + 1/r
solve for r.
sorry, I am working in too much of a hurry.
Total resistance will be 117/15 ohms
so
15/117=1/23.4 + 1/r
solve for r.
sorry, I am working in too much of a hurry.
PS. Thanks for catching it.
oh, haha, okay, I see. Well, thank you for correcting your answer. :)
dnqg ldqfytwj njyb amzpcxntw tpcuinkgs igydnmvsa sminkzy
Related Questions
If the voltage V, in an electric circuit is held constant,the current,I,is inversely proportional to...
In an electrical circuit, the current passing through a conductor varies inversely with the resistan...
A coffee maker is rated at 1200 W, a toaster at 1100 W, and a waffle maker at
1400 W. The three app...
Brittany is comparing the cost of buying coffee VS buying a fancy coffee Maker.She usually spends 65...