- #1
MJay
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Homework Statement
9.15
a) Each box has the restistance 1 Ohm. Find the total resistance between 1) A-B 2) A-D 3) B-C
b) Find I (electric current(?)) from A-D if you put a battery from B-C
c) Find I on the Ammeter and the direction (the lower picture)
http://sphotos-h.ak.fbcdn.net/hphotos-ak-prn1/v/954585_10151577257929660_1441841441_n.jpg?oh=536e2a504401f9beebed972302e56839&oe=51920295&__gda__=1368521085_3193921ab59c05a6069ec6b2519d2702
9.126
a) Use Kircchofs 2nd law on ABED to show that I3 ) 0,5A
b) Explain how I2 + I5 = 2A. Use Kirchhoffs 2nd law on BEFC to find another equation for uknown I2+I5
c) Find I1 and I4
d) Find the resistance R.
Homework Equations
Kirchoff's circuit law is relevant
The Attempt at a Solution
9.15
a) 1) Thought it would be just 1 ohm but it's supposed to be 0,63 2) I used 1/Rtotal = 1/R + 1/R + R which means 2+1 = 3 which is wrong while it's supposed to be 0,5.
This makes the rest pretty complicated to solve.
9.126
I used Kirchoffs law and found following formulas but not sure if it's supposed to be solved as
5 unknowns while we've only been into 3.