In which one of the following arrangements of resistors does the ammeter `M`, the has a resistance of `2 Omega` give the largest reading when the same potentail difference is applied between point `P` and `Q`

Options

A.
B.
C.
D.

Answer

C

Explanation

(c ) Let `V_(PQ) = E`
For `(A) : I = (E)/(4)` For `(B) : I = (E)/(2//3 + 2) = (E)/(8//3)`
For `(C ) : I = (E)/(2)` For `(D) : I = (E)/(3)`