Question:
The magnetic field at the origin due to the current flowing in the wire shown is
The magnetic field at the origin due to the current flowing in the wire shown is
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Direction of magnetic field is obtained using the right-hand thumb rule.
Updated On: Mar 18, 2026
- -₀ I8π a(i+k)
- ₀ I2π a(i+k)
- ₀ I8π a(-i+k)
- ₀ I4π a√(2)(i-k)
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The Correct Option is A
Solution and Explanation
Step 1: Use Biot–Savart law for each straight segment.
Step 2: Fields due to symmetric segments add vectorially.
Step 3: Resultant field: B=-(₀ I)/(8π a)(i+k)
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