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Q. An emf of 5 V is persuading when the current in the coil changes at the rate of 100 As-1. Find the coefficient of self induction.
Solution:
Induced emf e = - L dI/dt
Coefficient of self induction L = - e / (dI/dt)
= - 5 / 100
L = 0.05 H
a uniform sphere of mass 2kg is kept in a fixed position by two strings AB and CD. AB is horizontal and CD is inclined at 30° to the vertical. calculate the tension in each string.
1000 words
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