Ohms Law Pie Chart_What's your memory Aid?

[GoldDigger]

yeah, only one ah remember fer sur is upside down triange dot B = zero... another may be triangle X something = zero also

Very close. Leaving the details of math symbolism out for the moment:
1. The divergence of E at a point is related to the charge density at that point, and
2. Since there are no magnetic monopoles (the equivalent of magnetic charge), the divergence of B is zero.
(Where E is used to denote the electric field vector.)

 

[pcsailor]

Ok, here's my memory aid

Ok, here's my memory aid

Hi all,

Nice to see the tips.
One thing I would like to know. If you have the EAR-PIE circles drawn out (E=I/R & P=I/E), when you cover one up how to you determine correct math with the 2 square roots and 4 squared formulas? That gap in my knowledge is why I am using a memory tool.

So here is mine, as I wrote earlier (only simpler know).
All I need to write down are these four symbols and I've got it.
Step 01:
*
√
/
■
Why does this work for me? Through some repetitive writing (not typing), these 4 symbols are easy memory aid triggers for me. I'll document my steps below, from memory, then I'll insert pie-chart.jpg and we can see if I got this one correct. I've done this many times by now with one mistake (put the E in the P and the P in the E!)
Step 02:
* = 2
√ = 2
/ = 4
■ = 4
Step 03:
* = 2 EAR PIE
√ = 2 PR PR and I-b4-E with slants
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 PR PR
Step 04:
* = 2 EAR PIE
√ = 2 I = √P/R (I-b4-E with slants) & E = √PR
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 PR PR
Step 05:
* = 2 EAR PIE
√ = 2 I = √P/R (I-b4-E with slants) & E = √PR
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 P = R * I²
R = P / I²
P = E² / R
R = E² / P
Step 06:
* = 2 EAR PIE
√ = 2 I = √P/R (I-b4-E with slants) & E = √PR
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 P = R * I²
R = P / I²
P = E² / R
R = E² / P
Eiri Peep Irie:
E = P / I
I = E / R
R = E / I
I = P / E
Notice with the two symbols written out at length ('/' and '■'), all use division except for the top one
--
That's it, all done, all formulas are done and one could stop here if you like.
The last step I've been doing is draw out the circle, add P/I/E/R in the center, draw the pie-segment lines, and use the formulas above to fill in the circle.
Now, let's check this picture I've just uploaded.

View attachment 20111

E=IR & P=IE
I = √P/R & E = √PR
P = RI²
R = P / I²
P = E² / R
R = E² / P
E = P / I
I = E / R
R = E / I
I = P / E
All looks good.
--
So to recap, here's what I actually remember:
* EAR PIE
√ the 1st of 2 PR PR with I before E & I has all the slants
/ Eiri Peep Irie (this is the hardest part to remember for me, it's like a horror-chicken-rasta)
■ the 2nd PR PR, drawn vertical, & inverted to two RP RP's (simple pattern memory)
--
Anyway, some may say I have way overdone this but it works for me and now that I've done this, I should remember for good. That's how my brain works.
Thought I'd share.
I'm curious what other tricks anyone is using.
Cheers,
Phil

 

[Besoeker]

Hi all,

Nice to see the tips.
One thing I would like to know. If you have the EAR-PIE circles drawn out (E=I/R & P=I/E), when you cover one up how to you determine correct math with the 2 square roots and 4 squared formulas? That gap in my knowledge is why I am using a memory tool.

So here is mine, as I wrote earlier (only simpler know).
All I need to write down are these four symbols and I've got it.
Step 01:
*
√
/
■
Why does this work for me? Through some repetitive writing (not typing), these 4 symbols are easy memory aid triggers for me. I'll document my steps below, from memory, then I'll insert pie-chart.jpg and we can see if I got this one correct. I've done this many times by now with one mistake (put the E in the P and the P in the E!)
Step 02:
* = 2
√ = 2
/ = 4
■ = 4
Step 03:
* = 2 EAR PIE
√ = 2 PR PR and I-b4-E with slants
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 PR PR
Step 04:
* = 2 EAR PIE
√ = 2 I = √P/R (I-b4-E with slants) & E = √PR
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 PR PR
Step 05:
* = 2 EAR PIE
√ = 2 I = √P/R (I-b4-E with slants) & E = √PR
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 P = R * I²
R = P / I²
P = E² / R
R = E² / P
Step 06:
* = 2 EAR PIE
√ = 2 I = √P/R (I-b4-E with slants) & E = √PR
/ = 4 Eiri Peep Irie (like 'eeire peep irie')
■ = 4 P = R * I²
R = P / I²
P = E² / R
R = E² / P
Eiri Peep Irie:
E = P / I
I = E / R
R = E / I
I = P / E
Notice with the two symbols written out at length ('/' and '■'), all use division except for the top one
--
That's it, all done, all formulas are done and one could stop here if you like.
The last step I've been doing is draw out the circle, add P/I/E/R in the center, draw the pie-segment lines, and use the formulas above to fill in the circle.
Now, let's check this picture I've just uploaded.

View attachment 20111

E=IR & P=IE
I = √P/R & E = √PR
P = RI²
R = P / I²
P = E² / R
R = E² / P
E = P / I
I = E / R
R = E / I
I = P / E
All looks good.
--
So to recap, here's what I actually remember:
* EAR PIE
√ the 1st of 2 PR PR with I before E & I has all the slants
/ Eiri Peep Irie (this is the hardest part to remember for me, it's like a horror-chicken-rasta)
■ the 2nd PR PR, drawn vertical, & inverted to two RP RP's (simple pattern memory)
--
Anyway, some may say I have way overdone this but it works for me and now that I've done this, I should remember for good. That's how my brain works.
Thought I'd share.
I'm curious what other tricks anyone is using.
Cheers,
Phil

Begads....I'd never remember all of that !
But I'm pleased it works for you.

 

[LarryFine]

If you have the EAR-PIE circles drawn out (E=I/R & P=I/E), when you cover one up how to you determine correct math with the 2 square roots and 4 squared formulas?

I don't bother, I just go ahead and do two math problems instead. Just as fast and less error chance.

And, it's E=I*R & P=E*I, not E=I/R & P=I/E.

 

[pcsailor]

I don't bother, I just go ahead and do two math problems instead. Just as fast and less error chance.

And, it's E=I*R & P=E*I, not E=I/R & P=I/E.

Thanks

 

[ggunn]

Personally, all I have to remember is V=IR and P=VI. All the rest is just simple algebraic rearrangement of those two equations. If I forget that P=I^2R, I can derive it in a few seconds.

 

[RichB]

mine is simple--I remember E=I(R) and P=I(E) and from there I can do any of the others--Juast a matter of bouncoing back and forth