Question

using superposition theorem find the voltage across 1k ohm
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Answer 1

Explanation:

this is by superposition theorem. Hope it helps

Answer 2

The voltage across 1k ohm is 3V.

To Find:

The voltage across 1k ohm

​Explanation:

In the given circuit

At = 25v

For V = 25v

+ 25 - 1i₂ - 4 i₂ = 0

+ 25 - 3i₂ = 0

i₂ = 25/3 mA

25 - 5i₁ = 0

i₁ = 5mA

For v = 15v

current at 1k = 0

For i = 10mA

+4 (10 - i₄) - 1 (i₄) = 0

40 - 4i₄ - i₄ = 0

i₄ = 8

i₄ = 8mA

Now net i₂ = (5mA) + 0 + (8mA)

i₁ = 8 - 5

  = 3mA

V(drop) = 3mA × 1 k Ω

            = 3 v

The voltage around 1 k ohm is 3v.