Recent content by jg95ae

Forgive me maybe I'm just not getting this whole question. But in looking at the graph the time between each flash is the time it takes to discharge and charge again. And since I am asked to figure out the flash frequency, ie. the number of times that the light will flash/second. I'm still...

Ok about the sketch, I was thinking it was asking for a cicuit diagram but that didn't make sense seeing as that's what was given. So I'm thinking that it is asking for a graph - that should have a square-wave pattern. Can anyone verify if this is correct? Thanks

I'm still not sure about part (b) if anyone has suggestions it would be greatly appreciated. But I also have another question about part (a) when I'm figuring out the flash frequency (flashes/sec) do I need to take into consideration the amount of time it takes to discharge/flash, and...

I still got the same answer. Solving for t: V=Vo(1-e^-t/RC) ln(1-(V/Vo)) = -t/RC t = -ln(1-(V/Vo))(RC) Sub in and get t = -ln(1- (75/110))(0.1) t = 0.1145 sec I've also realized that I forgot about part (b) of the question and I'm not sure what I'm supposed to draw. Isn't that what...

Ok so the equation for voltage over Charging plate is: V = Vo(1 - e^-t/RC) And therefore I get an answer of t = 0.11 sec. I think I must be missing something since this seems a little too easy!

Ok so I'm really terrible at circuit questions, and am in need of some help. Its a long question so I will just type out he gist of it. Q.A simple type of blinking light circuit (attached diagram) is constructed using a neon lamp. When the voltage is low in RC portion, the lamp does not...

I'm not sure if I'm doing this right, I would appreciate if someone could take a look. Q. Find the equivalent resistance of the circuit (attached diagram). Each of the six resistors has a resistance equal to 12 ohms. I'm thinking that R5 and R6 are in series and therefore combine to be 2R...

Based on the last two replies I'm getting a little confused. For the total resistance I first found Req = R1 + Rp = 2ohms + 1.28 ohms = 3.28 So the tot current was found by I = V/Req = 12V/3.28ohms = 3.7A Here's were I'm a litte unsure, for the 2ohm resistor I = 3.7A ?? And the...

Sorry I had it right in my notes I just typed it incorrectly. Ok so I previously figured out the current flowing from the battery = I Then V2 over the the 2ohm resistor would be I x 2 ohms for which I got 7.2V And therefore Vp = 12- 7.2 = 4.8V And to find I for each of the parallel...

Ok so given that I do have a combination I'm not sure if I'm figuring the rest of the problem out. So I first figured out the resistance of the parallel resistors together. Rp = 1/3 + 1/4 +1/5 And to find Req for the whole circuit 2 ohm + Rp Therefore the tot. current flowing from the...

I'm having trouble with curcuits, my first problem is that I'm not sure if this is a combination parallel-series curcuit? For the simple circuit (attached diagram) determine the current through each resistor and the potential difference at the 5 ohm resistor. I think that the 2 ohm...

When I was putting all the numbers in I realized that there is no consideration for the distance between point B and D. Is the work needed to move the charge independent of the distance moved?

Just one more thing, my answer seems a little large. To calculate Vd I add Vd1 + Vd2, and the same for Vb which works out to be 2kQ/r where Q is the charges on either side? and r is the distance from each charge to point D?

If I were to use the change in electric potential energy I would use: change in PE = q x dV so PE = q(Vb-Vd) ?

I need a little help with this question: Calculate the work needed to move a 1.5uC test charge from point B to point D. (I have attached the diagram) The first part of the question required me to find the electric field at the points A, B, C and D. Which I think I figured out ok. I...