anonymous
  • anonymous
how do i apply nodal on this question?
Physics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
i need to assign the 2 nodes next to Va as V1 and V2?
ash2326
  • ash2326
Is there a resistor below Va?

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anonymous
  • anonymous
nope, tats just the error checking line ==
ash2326
  • ash2326
then he two nodes will have the same voltage Va on both the nodes
ash2326
  • ash2326
*the
anonymous
  • anonymous
oh so the sum flowing out = 0?
anonymous
  • anonymous
out from Va*
anonymous
  • anonymous
yea i think i got it, its very close to my experimental value.
ash2326
  • ash2326
It's easy, summing currents leaving from super node ( the branch with voltage Va) \[\frac{V_a-E_1}{R_1}+\frac{V_a-0}{R2}+\frac{V_a-0}{R3}+\frac{V_a-E2}{R4}=0\]
anonymous
  • anonymous
oh ic. didnt realise its a super node in the 1st place. not being observant enough
anonymous
  • anonymous
thanks alot =)
ash2326
  • ash2326
you;re welcome;D

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