Question

In the circuit shown below . calculate the value of x if the equivalent resistance between the point A and B is 4ohm​

Answer 1

Answer:

1 ohm

Explanation:

(4 ohm + 8 ohm) are parallel to (x + 5 ohm)

So, equivalent resistance, 1/R = 1/(4+8) + 1/(x+5)

1/R = (x + 5 + 12) / 12(x + 5)

R = (12x + 60) / (x + 17)

4x + 68 = 12x + 60

8x = 8

x = 1 ohm