Question

answer please for the above question​

Answer 1

Answer:

Explanation:

This circuit like wheatstone bridge so there will be no current flows through arm AB

Now resistance I upper arm = 20+30= 50ohm

And resists in lower arm=40+60=100ohm

Now for effective resistance

1/r=1/50 + 1/100 =2+1/100=3/100

Or r=100/3 = 33.33 ohn