# Is this equation correct

I have seen this in my book.Is this equation correct
##dW=F^→⋅dr^→##=##=-E^→.dr^→##
I don't think it is correct because ##dW=F^→⋅dr^→##
has unit of joule whereas ##- E^→.dr^→## it's unit is volt.

Last edited:

Related Other Physics Topics News on Phys.org
A.T.
I have seen this in my book.Is this equation correct
It's hard to read, but I think it misses charge. V*C=J

Nugatory
Mentor
I have seen this in my book.Is this equation correct
##dW=F^→⋅dr^→##=##=-E^→.dr^→##
I don't think it is correct because ##dW=F^→⋅dr^→##
has unit of joule whereas ##- E^→.dr^→## it's unit is volt.
Any time the units don't balance you know something is wrong somewhere.

By the way, in Latex, \vec{E} will appear as ##\vec{E}##... Often useful when working with vectors.

gracy
jtbell
Mentor
And if you want to make a vector out of a single letter like E, the curly braces are optional. \vec E works just as well to produce ##\vec E##. You need the braces only when the symbol is more than one character, e.g. \vec {AB} gives you ##\vec {AB}##. \vec AB on the other hand gives you ##\vec AB##.

gracy
/vec{F}

/vec{F}

##/vec{F}##

I am not able to write vectors.

Chestermiller
Mentor
##/vec{F}##
You have to use the backslash \, not the front slash/.
##\vec{F}##

gracy
\vec{F}

Chestermiller
Mentor
\vec{F}
And the ## before and after.

gracy
##\vec{F}## PERFECT!