Question

Please help with the attached question. An explanation would be appreciated.

Answer 1

Assume each resistor has a resistance R ohm

For X :
R_effective = R + R +R = 3R
For Y
\[1/R _{effective} = 1/R +1/R +1/R\]
R_effective = R/3

For Z :
R_effective = R + R/2 = 3R/2

As
\[Current ∝ 1/Resistance\]

Therefore
Maximum Current in Y
and Minimum current in X

Therefore option B is right

Answer 2

If you dont understand how to find effective resistance, have a look here at series and parallel connection
--> http://farside.ph.utexas.edu/teaching/302l/lectures/node58.html

Answer 3

Ok, thank you! Got it. :D

Answer 4

Welcome :)

Answer 5

Actually the answer would be C.