since max(sin theta) = 1, when theta = pi/2, and the maximum area you can get is when the loop is a square.
I think this should be right.@below: This is proved using simple geometry (the area of a square > area of rectangle with same perimeter)
For the following circuit:
How would you deduce the number of currents there are?
I am having trouble predicting how many are there (i am convinced there are 3).
Also, in general, what are some tips for finding how many currents there are?
But isn't current coulombs per second?? So it measures the rate at which the current is flowing? So wouldn't the resistor "hold back" some charge, making it slow down --> less current
resistors in seriess---current is the same??
So current is the same if you have resistors in series….but won't the current decrease because the resistors provide resistance to the current??\
I am very sorry because this post seems spammy, but I cannot, for the life of me, find the resistivity of NiCu alloy.
My lab has it as 35*10^8 Ω*m, and when i compare my calculated value of resistance to the theoretical it is off by a factor of 10. This causes me to think that there is a...
When can you use this formula?
On page 13 it uses it here: http://web.mit.edu/8.02t/www/802TEAL3D/visualizations/coursenotes/modules/guide06.pdf
however my instructor said that you can only use it when you are using a wire and the current is flowing parallel to the axis.
So is this correct thinking:
You combine the capacitors into two capacitors in series, and since the charges on both of those are equal, you use C=Q/V so C_1V_1 = C_2V_2. Since C_1 and C_2 and V_1+v_2 is known, you can solve for it.
However, how do you solve if they are parallel? After...
Okay, I'm still not getting it…
I know how to find the total charge by using C = Q/V.
I also know that we can make two effective capacitors (from a-c and b-c). So now it reduces to a known voltage from a-b and two equivalent capacitors, and the total charge. How do i proceed from here to find...
Say the capacitance between a-c is X and between c-b is Y.
Does this mean the voltage is still the same at a-c and c-b even if ##X\ne Y##??
Im very confused (sorry!)
Homework Statement
C_1 = 5uF
c_2 = 10uF
C_3 = 2uF
Potential difference between a and b is 60 V.
What is the charged stored on C_3
Homework Equations
C=Q/V
The Attempt at a Solution
See attached.
My question is, why is the charge distribution from A to C the same as...
Current is formed, so there is a voltage?
And since there is no loss of electrons (charge) and the intensity (current) is the same, the voltage is the same?
Is that correct?
Homework Statement
C1 = 6.00 uF
C2 = 3.00 uF
##\Delta V = 20.0## V
Capacitor c1 is first charged by the closing of s_1. Switch S_1 is then opened and the carved capacitor is connected to the uncharged capacitor b the closing of S_2. Calculate the initial charge acquired by C_1 and the...
I can't find the correct video for some reason . I ll check later.
Suppose you have something like this:
and it's connected to a battery . Would ALL the capacitors have the same voltage across it?
I'm mainly confused on problems like: "you stick a 12 volt battery to a circuit like...
I was watching this video: http://www.youtube.com/watch?v=P8A1U-RZDao&index=7&list=PLLUpvzaZLf3Jv7AjU5pfY8s25-QBCfdIZ
and at around 6 minutes, I got confused. Ill summarize it below in case the link does not work:
If you have a circuit which consists of a battery which is 12 volts, and a...