Compute the self-inductance of a toroid of square cross section if it is wound with 200 turns. the inner and the outer radii of the toroid are 20 cm and 25 cm, respectively. the relative permeability of the mag netic material is 500. if the current in the coil varies sinusoidally as 2 sin 314r a, determine the induced emf in the coil

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

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