AIPMT MAINS 2009 Physics Resistance MCQ Question
A wire of resistance 12 Ω per meter is bent to form a complete circle of radius 10 cm. The resistance between its two diametrically opposite points, A and B as shown in the Figure, is:
3 Ω
6 mΩ
6 Ω
0.6 mΩ
Correct Answer
Detailed Explanation
The total length of the wire is the circumference of the circle, 2πr. The resistance between two diametrically opposite points is half of the total resistance, which is 3 Ω.
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