A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor di
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The current is defined as the quantity of charge Q that passes through a certain location in a time 
:
Using the data of the problem, we find:
Using the data of the problem, we find:
Explanation:
(a) We have,
Length of solenoid, l = 55 cm = 0.55 m
Diameter of the solenoid, d = 10 cm
Radius, r = 5 cm = 0.05 m
Number of loops in the solenoid is 1000.
(a) The self inductance in the solenoid is given by :
A is area
(b) The energy stored in the inductor is given by :
Hence, this is the required solution.