Question

In the circuit shown below in Fig. 8.45, calculate the
value of x if the equivalent resistance between the
points A and B is 4 ohm​

Answer 1

Answer:

In this above two are in series

So above

$4 + 8 = 12$

Sobelow also series

$x + 5 = 5x$

Both are in parallel to each other

So1/12 plus 1/5x=1/4

$1 \div 5x = (1 \div 4) - (1 \div 12)$

Then

$1 \div 5x = 1 \div 6 \\ so5x = 6 \\ x = 6 \div 5$

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