Question

Find the equivalent resistance between the points A and B​

Answer 1

Answer:

It's a Wheatstone bridge. So 10 ohm resistor can ba neglected.

Explanation:

Effective resistance = 4ohm and 8ohm are in series, 2ohm and 4 ohm are in series.

These two are parallel.

The effective resistance is 12×6÷18=4ohm

Answer 2

Answer:

It's a wheat stone bridge

So, 10ohm resistor is canclled

We know that,R1 and R2 are in parallel

So, Req = 1/R1+1/R2

= 1/4+1/2

= 1.33333ohm.

R3 and R4 are in parallel

So, Req = 1/R1+1/R2

= 1/8+1/4

= 2.66667ohm.

Now both the Resistors are in series

So, Req = R1+R2

= 1.33333+2.66667

= 4ohm.