Consider a metallic ring of radius 1m, mass 1kg, and carrying current 1A in a gravity free space in x-y plane with its center at origin as shown. If a uniform magnetic field is applied, then instantaneous acceleration of point P(which is on the y-axis at the moment) is .
Find n.
Consider a small element , at point P, of length and mass
Magnetic force on this element is given by
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Two horizontal parallel straight conductors, each 20 cm long, are arranged one vertically above the other and carry equal currents in opposite directions. The lower conductor is fixed while the other is free to move in guides remaining parallel to the lower. If the upper conductor weighs 1.0 g, what is the approximate current (in A) that will maintain the conductors at a distance 0.50 cm apart?
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