At the centre of a circular loop of radius 10 cm carrying a current of 8 A

MATHEMATICS · Single correct · ISC · Mathematics · Physics · Magnetic Effects of Current and Magnetism

Problem

At the centre of a circular loop of radius 10 cm carrying a current of 8 A, a straight conductor of length 5 cm is placed along the axis of the loop so that the current in the conductor is along the magnetic field direction. What is the magnitude of the force acting on the conductor? (a) 2.0×10−5 N2.0\times10^{-5}\,\text{N} (b) 1.0×10−5 N1.0\times10^{-5}\,\text{N} (c) 0 N0\,\text{N} (d) 6.4×10−6 N6.4\times10^{-6}\,\text{N}

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