STANDARDPhysics-Current Electricity
STANDARD Physics Resistance in Circuits MCQ Question
Type: MCQ-numerical-Medium-Class 12
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
A
3 Ω
B
6π Ω
C
6 Ω
D
0.6π Ω
Correct Answer
Option D
Detailed Explanation
Wire of length 2π × 0.1 m of 12.2 Ω m⁻¹ is bent to a circle. Resistance of each part = 12 × π × 0.1 = 1.2 π Ω. Since upper and lower part of the wire are in parallel connection, total resistance = 0.6π Ω.
Found an issue with this question?