Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
UnkleRhaukus
Group Title
Is electric current a scalar? Can it be negative?
 one year ago
 one year ago
UnkleRhaukus Group Title
Is electric current a scalar? Can it be negative?
 one year ago
 one year ago

This Question is Closed

.Sam. Group TitleBest ResponseYou've already chosen the best response.0
THAT is what I thought also
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.0
i got it wrong, i dont really understand why
 one year ago

DLS Group TitleBest ResponseYou've already chosen the best response.1
Current is scalar and it cannot be negative.
 one year ago

DLS Group TitleBest ResponseYou've already chosen the best response.1
\[\LARGE I=  \frac{dQ}{dt}\] indicates that flow of current per unit time is decreasing maybe the question posted is a subpart of another question or perhaps incomplete.
 one year ago

DLS Group TitleBest ResponseYou've already chosen the best response.1
@yrelhan4 ? :O
 one year ago

yrelhan4 Group TitleBest ResponseYou've already chosen the best response.1
the convention that we follow is movement of ve charge as current right?
 one year ago

raane Group TitleBest ResponseYou've already chosen the best response.0
@DLS current can be negative
 one year ago

Shadowys Group TitleBest ResponseYou've already chosen the best response.0
normally we don't take current as a vector and instead use the length vector instead.
 one year ago

raane Group TitleBest ResponseYou've already chosen the best response.0
because its scalar
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
dw:1367418867689:dw
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
if i assume that way is +ve, then the reverse of it will be ve. in a circuit we assume current directions initially. based on that we get ve or +ve numbers after analysis
 one year ago

Ruchi. Group TitleBest ResponseYou've already chosen the best response.1
becoz current does'nt follow vector algebra so, it is scalar.
 one year ago

agent0smith Group TitleBest ResponseYou've already chosen the best response.0
"the convention that we follow is movement of ve charge as current right?" I think this is why. Current is created by flow of electrons which go from  to +, but current is defined as + to .
 one year ago

agent0smith Group TitleBest ResponseYou've already chosen the best response.0
Still, this site uses no negative sign, it has your answer... http://physics.tutorvista.com/electricityandmagnetism/electriccurrent.html
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.0
maybe electric current is a phasor
 one year ago

agent0smith Group TitleBest ResponseYou've already chosen the best response.0
Hmm, i guess current can be negative, because it does have direction (it can come up like that when using Kirchoff's laws, to find current in loops of a circuit).
 one year ago

yrelhan4 Group TitleBest ResponseYou've already chosen the best response.1
http://openstudy.com/study#/updates/4fb98da9e4b05565342e8394 Look what phoneix_rags and chrsimmo have said.. hmm.. scalar i'd say now..
 one year ago

yrelhan4 Group TitleBest ResponseYou've already chosen the best response.1
and why it is not a vector even though it has direction... i'll give it to ruchi.. still not 100% sure about what current is.. but scalar looks good to me.
 one year ago

yrelhan4 Group TitleBest ResponseYou've already chosen the best response.1
ok another example.. for force on a current carrying wire in a magnetic field F=IdL×B .. here B is a vector.. and dL is a vector. we take the the direction of current to decide the direction of dL.. and it completely depends on what coordinate system we choose.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.