Parallel Circuits Equivalent Resistance.

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Summary:

Can you help me optimize?

Parallel Circuits Equivalent Resistance.

Trenly 05 May 2015 18:31

I wrote a program for the formula:

(1/Rt)=(1/R1)+(1/R2)+(1/Rn)  //I don't have time to use subscripts right now

Here is my current code:

Input "Repeat (n) times:",N //input number of resistors in parallel
1->B               //reset the loop variable
Delvar E           //clear the current answer
For(B,1,N          //repeat depending on how many resistors you have
Input "R:",A       //input the resistance in ohms of an individual resistor
A^-1 -> C         //I am using the inverse button here
E+C->E            //take the total and add the resistance
Delvar ADelvar C     //remove any source of error
End              //end the for loop
Disp E^-1        //display the correct answer
Disp round(E^-1,2)   //display a rounded answer

How can I optimize this code?

Last edited on 05 May 2015 19:01 by Trenly Show more

Toothless the Dragon (guest) 05 May 2015 19:32

Input "Repeat (n) times:",N
Delvar E
For(B,1,N
Input "R:",A
A^-1
E+Ans->E
Delvar ADelvar C
End
Disp E^-1, round(E^-1,2)
"

About all I can see, it's pretty darn optimized! The last part is a stylistic choice, just removes the "Done" statement.

Trenly 05 May 2015 20:04

Thanks toothless.

Michael2_3B 05 May 2015 20:19

Nice, although you could just do E+A^-1->E. Also, since C is no longer used, you do not need to do "DelVar C".

Re: Parallel Circuits Equivalent Resistance.

lirtosiast 05 May 2015 19:42

Input "Enter resistor values, separated by commas", Str1
sum(expr("{"+Str1) ֿ¹) ֿ¹
Disp Ans,round(Ans,2

Re: Parallel Circuits Equivalent Resistance.

Trenly 05 May 2015 20:05

The input goes off of my screen, but that is easy to fix. Thank you.

Last edited on 05 May 2015 20:13 by Trenly Show more

Re: Parallel Circuits Equivalent Resistance.

Toothless the Dragon 06 May 2015 01:44

Ooh nice, good job.

Would it be easier to input a list instead though?

Re: Parallel Circuits Equivalent Resistance.

Electromagnet8 06 May 2015 01:51

You could request a list by using Input L1 and omit the expr("{"+Str1) but the user will have to manually put in the bracket. Also, a list variable is destroyed. Usually, destroying strings are favorable to destroying lists.

Re: Parallel Circuits Equivalent Resistance.

Toothless the Dragon 06 May 2015 02:08

Copy it to a temp variable (like L2) and use that maybe?

Re: Parallel Circuits Equivalent Resistance.

Electromagnet8 06 May 2015 02:26

You would still be destroying a list variable….

Re: Parallel Circuits Equivalent Resistance.

Trenly 06 May 2015 02:35

The speed and size work well. I think the string is a pretty good way of doing it.

Re: Parallel Circuits Equivalent Resistance.

CortEnis 21 Oct 2015 17:54

I didn't work much upon it but as per my little experience i think it is right if you could request a list by using Input L1 and omit the expr("{"+Str1) but the user will have to manually put in the bracket.
Also, a list variable is destroyed. Usually, destroying strings are favorable to destroying lists.

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Last edited on 26 Oct 2015 22:03 by CortEnis Show more

Re: Parallel Circuits Equivalent Resistance.

Trenly 21 Oct 2015 19:23

Please don't revive dead topics