Question

calculate the x if the equivalent resistance between P and Q and 5 ohm . 6 ohm 4 ohm 8 ohm and x ohm ​

Answer 1

Answer:

this case, the 2 resistors of 4 ohms and 8 ohms are connected in series and the combined resistance is given as 4+8 = 12 ohms.

The 2 resistors of x ohms and 5 ohms are connected in series and the combined resistance is given as x+5 ohms.

The above 2 sets of resistors are connected in parallel. Thus, the total resistance is expressed as

12

1

+

x+5

1

=

4

1

asthetotalresistanceisgivenas4ohmsinthequestion.

Solving for x in the above equation we get x=0.99. That is. 1 ohm approximately.

Hence, the value of the unknown resistance in the circuit is 1 ohm.