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a) A circular loop of Radius R carries a...

a) A circular loop of Radius R carries a current I. Obtain an expression for the magnetic field at a point on its axis at a distance of x from its centre. b) A conducting rod of length 2 m is placed on a horizontal table in north-south direction. It carries a current of 5 A from south to north. Find the direction and magnitude of magnetic force acting on the rod. Given that Earth's magnetic field at the place is `0.6 xx 10^(-4) T` and angle of dip is `(pi/6)`

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