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Homework Statement A conducting cylinder of radius r0 carries a current I uniformly throughout its volume. Find an expression for the magnetic field H at a distance r from the axis of the cylinder (a) for r < r0 , and (b) for r > r0 . Homework Equations Biot-Savart Law Amperes Law...

Hi I have two question i am stuck on can someone give me some hints on how would i start it. The attachment has the problems i am referring to. In Question 1 how would you simplify the resistance so you can get Rab? In Question 2 i have a problem with what exactly does it mean by Req...

the answer says that i0 = 29.45A

ok my first equation: 21V1 - 10V3 = -110 is derived from i0+i1+i4 = -2 the supernode the other equation i used is node V3 i4 = -7 which comes out as V2 - V3 = -21 now i solved the simultaneous equation and i got: 1) 21V2 - 10V3 = -110 2) V2 - V3 = -21 *10 3) 10V2 - V3 = -210...

yes that was what i meant. So i made the equation like the following but it doesn't give me correct answer? 10 + ((V_2 - V_3) / 3) = 0

anyone answer this question for me?

for question 2 would it be i_3 - i_4 * 3ohms = 10 how would you represent the voltage across i3? Because i just made it the current 2.

isn't i1*2 ohms positive why would i be negative? Because if you start from the V_1 point and go around clockwise you get 2i_1 + 2 + V_2 = V_1

ok i got two more question on nodal analysis Qns 1: Homework Statement Calculate V_1 and V_2 in the circuit below using nodal analysis. http://img30.imageshack.us/img30/4971/circuitqns.png Homework Equations Ohms Law The Attempt at a Solution Firstly i used KCL for supernode...

oops srry heres a larger picture http://img8.imageshack.us/i/circuit39.png/

Homework Statement Determine I_b in the circuit below using nodal analysis. http://img8.imageshack.us/img8/1339/circuit39.th.png Homework Equations Ohms LawThe Attempt at a Solution Can someone tell me if i have done anything wrong in my first part of the question. Becuase i am pretty sure...

So it will end up being 10ohms when you have simplified everything.

Homework Statement [PLAIN]http://img802.imageshack.us/img802/9172/qns33.png Simplifying the circuit? Also find the power dissipated in the circuit? Homework Equations P=I^2R V=IR The Attempt at a Solution I tired to simply the diagonal by making it parallel with...

Homework Statement http://img137.imageshack.us/img137/355/circuit2.png Homework Equations P=VI P=I^2 R V=IR The Attempt at a Solution The part a is all correct. i_\wedge = 5A i_o = 2A v_o = 80V This is what i have done in part b but it is not correct because P_delivered not equal to...

yep i got the answr, thanks for the help