Mathematics · Magnetism
Two long straight current-carrying wires are kept parallel at a distance of 2r from each other. If currents I and 2I respectively flow through them in the same direction, the magnitude of the resultant magnetic field B at the midpoint between the two wires is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1μ0I2πr✓
- 2μ0I4πr
- 32μ0I2πr
- 43μ0I2πr
Correct answer
μ0I2πr
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