| Author |
NEED Help From Basic Ohm's Law to E=SqRt of P*R
|
|
| rdelec 2008-02-11, 9:25 pm |
|
NEED Help From Basic Ohm's Law to E=SqRt of P*R
Basic Ohm's Law E P
----------------
----------------
I R E I
What simple Ohm's Law formulas get combined to (Exp.E=RxI E=P/I} to
arrive at I=SqRt of P/R V=SqRt of P*R P= V^2/R
Thank You for any advice Frustrated Apprentice
| |
|
| In article <973dbdc7-fcf6-436b-9f8a-c51a038ace50
@s12g2000prg.googlegroups.com>, rdeleccon@hotmail.com says...
>
> NEED Help From Basic Ohm's Law to E=SqRt of P*R
>
> Basic Ohm's Law E P
> ----------------
> ----------------
> I R E I
>
> What simple Ohm's Law formulas get combined to (Exp.E=RxI E=P/I} to
> arrive at I=SqRt of P/R V=SqRt of P*R P= V^2/R
>
> Thank You for any advice Frustrated Apprentice
Not Ohm's law, but try P=EI.
--
Keith
| |
| Ben Miller 2008-02-12, 9:25 am |
| rdelec wrote:
> NEED Help From Basic Ohm's Law to E=SqRt of P*R
>
> Basic Ohm's Law E P
> ----------------
> ----------------
> I R E I
>
> What simple Ohm's Law formulas get combined to (Exp.E=RxI E=P/I} to
> arrive at I=SqRt of P/R V=SqRt of P*R P= V^2/R
>
> Thank You for any advice Frustrated Apprentice
You already described the formulas. It is simple algebra from there.
However, you may be getting confused because "V" & "E" are used
interchangeably in the formulas above, to represent voltage. I would make
all of them consistent, using either letter.
Ben Miller.
--
Benjamin D Miller, PE
www.bmillerengineering.com
| |
|
| rdelec wrote:
> NEED Help From Basic Ohm's Law to E=SqRt of P*R
>
> Basic Ohm's Law E P
> ----------------
> ----------------
> I R E I
>
> What simple Ohm's Law formulas get combined to (Exp.E=RxI E=P/I} to
> arrive at I=SqRt of P/R V=SqRt of P*R P= V^2/R
>
> Thank You for any advice Frustrated Apprentice
It's algebra.
E = I*R so I = E/R
P = E*I
Substitute E/R for I, thus P = E*(E/R)
That can be re-written as P = E^2/R
Multiply each side by R so P*R = E^2
Take the squareroot of each side so Sqrt(P*R) = E
Ed
| |
| rdelec 2008-02-13, 8:25 pm |
| On Feb 12, 5:11=A0pm, ehsjr <eh...@bellatlantic.net> wrote:
> rdelec wrote:
>
=A0 =A0 =A0P[color=darkred]
R =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 E =A0 =A0 =A0I[color=darkred]
>
to[color=darkred]
>
>
> It's algebra.
>
> E =3D I*R so I =3D E/R
> P =3D E*I
>
> Substitute E/R for I, thus P =3D E*(E/R)
> That can be re-written as P =3D E^2/R
>
> Multiply each side by R so P*R =3D E^2
>
> Take the squareroot of each side so Sqrt(P*R) =3D E
>
> Ed
Thank you for this Info. It is a great help SORRY I just reposted the
same question.
|
|
|
|