AIPMT PRELIMS 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 π Ω
6 Ω
0.6 π Ω
Correct Answer
Detailed Explanation
The total length of the wire is the circumference of the circle, 2πr. The resistance between diametrically opposite points is half the total resistance, calculated as 6 Ω.
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