hello guys
iam doing my homework in magnetic fields course
and i found this problem i solved (a) and (b)
by using F=I L x B and the total force on the triangular loop would be zero
but in (c) i tried alot to find the torque on the loop but i couldn't get the same result
so please help me...
This was the first chapter of Digital Circuits ..an Introduction for binary and other numbering systems ...this was the first section of the course :D
and if 3 * 6 = 22
then 3 * 6 = 2+2x then base = 8 :))
[Help] with Numbering System "Digital Circuit"
Hello Guys ..
iam having an exam on digital circuits and i try to work on some problems about numbering systems
and i found this problems but i couldn't solve it ..
i said that (x-3)(x-6)=x^2-11x+22
then i said that...
okay in the + input the diode will be reverse biased so the current will not pass , but in the case of - input the diode will be forward biased and the current will pass
am i right ??
hello guys
while studing the diode limitters
i found two examples i solved the first one but i couldn't with the second
1 -
2-
in the first i know that the diode while be forward biased in the negative half of the signal
so the negative half will be limitted to -0.7 v...
okay that's mean that we can turn the symbol of the battery if we turned "a" and "b" in the other side ??
i mean if we put b in the upper right side and a in the lower right side ?? :)
Hello guys ..
i need your help with something
in this photo i understand the way to calculate R thevenin's and the way to calculate E thevenin's
but i couldn't understand
why did we put the polarity in this way ??
i mean why can't we put switch the polarity of the battery ...
hello guys
i have been trying to solve this problem for a long time but i couldn't so i need your help..
iam trying to analyze the circuit using mesh analysis
so i converted the current so to voltage source E=2*10=20V
i don't know how to redraw the circuit taking this shape...
hello guys !!
i know that in zener diode limitting circuit
there are three types : 1-limitting Positive peak 2-limitting Negative peak 3-limtting both peaks
and i know that output voltage for
limitting positive peak =VZ+0.7v
limitting negative peak= -VZ-0.7v
but i don't know what will...
hello guys :))
the question is :
in (a)
IT= 10/[4k||8k+4k||4k]=2.14 mA
but i can't calculate I so please guys help me i tried many times to get it but i couldn't :(
thx guys !!
Hello Guys !!
While Studing coupling transformers i found this problem
i tried to solve it
but i don't know if my solving is right or no !!
so tell me :)
The problem :
My solve is :
V(out)=nV(in)
V(out)= 2 * 312 = 624 v
PIV = V(out) = 624 v
and if the diode is...
Nodal Analysis , Can't Understand the direction of a current !!
In This Question "Nodal Analysis" we will apply kirchoff's current law ..
My Question is :
Why in Fig 8.51 and 8.52 the currents take these directions ??
i tried to get it but i couldn't
Photos :
Thanks...
okay iam trying to apply KCL by myself so please tell me
am i right or not ??
I3 = I4 + I5 +I7 + I8
so
4 A = 0.5 I8 + 0.25 I8 + (1/3) I8 +I8
so
I8 will be 3.7 A
i feel that i'm very stupid :shy:
i don't know the right way to apply KCL here
We Didn't take applications on KCL yet but i tried to apply it on simple circuits and i found it easy
but i don't know how to apply it on this circuit so please tell me :))
okay .. this is the exact question and the exact statments which are required
i want to know how to get I8 because i don't know which law should i use to find ??
Which Law should i use to analyze this circuit ??
Hello Guys !!
Sorry i have many questions because iam not a professional in this ..
My Question is :
in this photo i found that the total Resistance is : 5 ohm
and
the total current is 16 A
and
I3 = I9 = 4 A
and I8= 1 A
I...
Hello Guys !!
In This photos i found that
in (a) : RT= 4 Ω+ 10 Ω+ 4 Ω= 18 Ω
and
in (d) : RT= 10 Ω
but i can't understand why in (a) the total resistance equals to 18 and how will the current would pass ??
and in (d) i can't understand why the total resistance equals to 10 and why we...
Hello Guys !!
My Question : in this photo i found That Total Resistance will be = 7 ohm .
and I2 = 12 / 7= 1.71 A and I1 = 0.5 * I2= 0.5 * 1.71= 0.85 A
I can't understand why I1= 0.5 I2 ?? and why it isn't the same of I2 ??
here is the photo
Thank you Guys !! :))
Hello Guys
My Question about Kirchoff's Law is : why in this Example
we considered that E2 is a Voltage Drop not a Voltage Rise ??
i mean why we didn't say that : +E2-V1-V2+E2=0 ???
and Thanks Guys :)) !!
hello guys !!
iam new at this forum and i have a question :))
The quesion is : why can't i calculate V7 from Ohm's Law So V7=E/R7
and it will be equal to 72/9=8V
Please answer me and thank you guys :)