Recent content by jlpmghrs

oh okay it's clear now! thank you so so much :D

soo wait, let's see if i got this right You're saying, for example, it varies with its position in an electric field as a function of time, t? and therefore, is not necessarily depending on what is connected to it?

O.o *blink*

yea..that makes sense :) thanks heaps! just one thing though, its still a little unclear, what is causing this variation with time? how is it practically happening?

this is the question - "Suppose that the voltage v(t) produced by an ideal voltage source is described by v(t) = 10e-t V. Determine the value of this voltage at the instants of time t = 0s, t = 1s, t = 2s and t = 3s ." As for the definition, I've quoted the exact wording. Hmm...but then I...

"An ideal voltage source is a device that produces V volts across its terminals regardless of what is connected to it" - this is the definition that I have in my book. Then they have a question in which the voltage across an ideal voltage source varies with time. How is it varying with time...

Hey thank you guys soo much :) I'm new here and I'm really happy to have help :D @gsal : according to demoivre's theorem the nth roots of unity are given by : cis (2kpi/n), where k = 0, 1, 2,..., (n-1) So here, z5 {n being 5} = Cos(0) + iSin(0), Cos(1.2.pi/5) + iSin(1.2.pi/5)...

Read the post first, then look at the graphs - https://picasaweb.google.com/104328106431858306974/Jun232011?authkey=Gv1sRgCIe1gv_A_bT__wE#5621389108478505394" Well this is the question...and I don't understand it very well : Suppose you know that x raised to the fifth power is 1. What can you...