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edr1c

how do i apply nodal on this question?

  • one year ago
  • one year ago

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  1. edr1c
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    • one year ago
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  2. edr1c
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    i need to assign the 2 nodes next to Va as V1 and V2?

    • one year ago
  3. ash2326
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    Is there a resistor below Va?

    • one year ago
  4. edr1c
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    nope, tats just the error checking line ==

    • one year ago
  5. ash2326
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    then he two nodes will have the same voltage Va on both the nodes

    • one year ago
  6. ash2326
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    *the

    • one year ago
  7. edr1c
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    oh so the sum flowing out = 0?

    • one year ago
  8. edr1c
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    out from Va*

    • one year ago
  9. edr1c
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    yea i think i got it, its very close to my experimental value.

    • one year ago
  10. ash2326
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    It's easy, summing currents leaving from super node ( the branch with voltage Va) \[\frac{V_a-E_1}{R_1}+\frac{V_a-0}{R2}+\frac{V_a-0}{R3}+\frac{V_a-E2}{R4}=0\]

    • one year ago
  11. edr1c
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    oh ic. didnt realise its a super node in the 1st place. not being observant enough

    • one year ago
  12. edr1c
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    thanks alot =)

    • one year ago
  13. ash2326
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    you;re welcome;D

    • one year ago
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