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QJEEM24Phdcd7: JEE Main 2024 Physics - Class 12 JEEM24Phdcd7 Solution: A 2A current carrying straight metal wire of resistance 1 Ω ,…

A 2A current carrying straight metal wire of resistance 1Ω, resistivity 2×10−6Ωm, area of cross-section 10 mm2 and mass 500 g is suspended horizontally in mid air by applying a uniform magnetic field B→. The magnitude of B is ________ ×10−1 T (given, g=10 m/s2).

Step-by-Step Verified Solution

iLB=mg and L=ARρ∴B=mgρiAR=0.5×10×2×10−62×10×10−6×1=0.5 T

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