Re: Presenting complex numbers at secondary level


"Brian Reay" <see@xxxxxxxxxxxxxxx> wrote in message
news:Jv9df.8056$8R6.3146@xxxxxxxxxxxxxxxxxxxxxxx
>
> Would it?
>
> Maybe if you were to look at poles and zeros etc, but if you just looked
> at resistance and reactance would that be beyond secondary level? Simple
> 2D plot with resistance as x axis, +/- y as reactances (L and C), bit of
> Pythag to get the magnitude, a+bi (or bj I suppose) to (r,Theta)
> onversion. The significance of reactance and phase relationships isn't too
> hard to grasp and bit of Ohms Law (taught at secondary level) should see
> you home.
>
> Ties in nicely with unit vector work taught at this level.
>

I suppose I could find some simpler uses that could be explained with
a good deal less that a year of electrical studies, but I wanted to check
if anyone in the group knew of a practical use that could be explained
in only one or two class sessions. While I might be able to explain
how to apply Ohm's Law to RC and RL networks, I'm concerned
about how much work it would take to get them interested in
inductance or capacitance, since only a few will be studying it in
any other subject.

Thanks for the reply.

Gerry Ashton (WY2Y)


.

Relevant Pages

  • Re: Presenting complex numbers at secondary level
    ... resistance and reactance would that be beyond secondary level? ... The significance of reactance and phase relationships isn't too hard to ... grasp and bit of Ohms Law (taught at secondary level) should see you home. ... Ties in nicely with unit vector work taught at this level. ...
    (uk.education.maths)
  • Re: Presenting complex numbers at secondary level
    ... >> at resistance and reactance would that be beyond secondary level? ... The significance of reactance and phase relationships isn't ... >> hard to grasp and bit of Ohms Law (taught at secondary level) should see ... >> Ties in nicely with unit vector work taught at this level. ...
    (uk.education.maths)
  • Re: Presenting complex numbers at secondary level
    ... The significance of reactance and phase relationships isn't too ... > hard to grasp and bit of Ohms Law (taught at secondary level) should see ... > Ties in nicely with unit vector work taught at this level. ... A capacitor/inductorhas an imaginary "resistance", ...
    (uk.education.maths)