A uniform wire of $16\,\Omega $ is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance $16\,\Omega $. The effective resistance between the other two opposite corners is ............... $\Omega$
A$32$
B$20$
C$8$
D$4$
Medium
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D$4$
d According to the principle of Wheatstone’s bridge, the effective resistance between the given points is $4\,\Omega$.
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