Physics · Magnetism and Magnetic Effects of Current
Two concentric circular coils of 10 turns each are situated in the same plane. Their radii are 20 cm and 40 cm, and they carry currents of 0.2 A and 0.3 A respectively in opposite directions. What is the magnitude of the net magnetic field at their common centre? (Take μ0 = 4π × 10-7 SI units)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 17π × 10-6 T
- 22π × 10-5 T
- 35π × 10-7 T✓
- 44π × 10-7 T
Correct answer
5π × 10-7 T
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