Current Electricity 1 Question 15

15. Six equal resistances are connected between points $P, Q$ and $R$ as shown in the figure. Then, the net resistance will be maximum between

$(2004,2 M)$

(a) $P$ and $Q$

(b) $Q$ and $R$

(c) $P$ and $R$

(d) any two points

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Solution:

  1. $R _{P Q}=\frac{5}{11} r, R _{Q R}=\frac{4}{11} r$ and $R _{P R}=\frac{3}{11} r$

$\therefore R _{P Q}$ is maximum.

Therefore, the correct option is (a).



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