Q11: Three equal resistors are connected as shown in the figure below. The equivalent resistance between points \( A \) and \( B \) is:
\[
\text { a. } 3 R
\]
b. \( R^{2} / 3 \)
c. \( R \)
d. \( 2 R \)
e. \( R / 2 \)
Q12: A wire of given material having length (i) and area of cross-section \( A \) has a resistance of 4 . The magnitude of a resistance (in \( \Omega \) ) of another wire of the same material having length ( \( (/ / 2 \) ) and area of cross-section \( 2 \mathrm{~A} \) is equal to:
a. 3
b. Zero
c. 1
d. 4
e. 2