Question

In the given circuit, the equivalent resistance between points $A$ and $B$ will be.

• A. $\frac{8}{3}R$
• B. $4R$
• C. $6R$
• D. $10R$

Answer 1

The correct option is B $4R$

since the point O shown in the image is completely shorted the 3 "2R" resistors above that point are basically irrelevant. so the circuit is only two 2R resistors in series that make total resistance $=$ 4R.