Question

In the following circuit the equivalent resistance between `A` and `B` is

A. `20/3 Omega`
B. `10 Omega`
C. `16 Omega`
D. `20 Omega`

Answer 1

Correct Answer - C
According to the given figure `A` is at lower potential w.r.t. `B`. Hence diodes are in reverse biasing, so equivalent, circuit can be redrawn as follows.
`implies` Equivalent resistance between `A` and `B`
`R=8+2+6=16 Omega`