Question

Calculate the equivalent resistance between A and B

Answer 1

Answer:

12Ω

Explanation:

Resistors in CDEF are in series

Net resistance in CDEF = 2Ω + 3Ω + 5Ω = 10Ω

so, at CD, we have two 10Ω resistors in parallel

⇒ 1/(net resistance) = $\frac{1}{10} +\frac{1}{10}$

⇒ 1/(net resistance) = $\frac{2}{10}$

⇒ 1/(net resistance) = $\frac{1}{5}$

⇒ net resistance = 5Ω

Through ABCD we have resistors in series

Net resistance in ABCD = 2Ω + 5Ω + 5Ω = 12Ω

∴ The equivalent resistance between A and B = 12Ω