Solve the following questions:
Question 1: Calculate the self-inductance of a 51.0 cm long, 10.0 cm diameter solenoid having 1000 loops.
(mH)
Question 2: How much energy is stored in this inductor when 21.5 A of current flows through it?
(J)
Question 3: How fast can it be turned off if the induced emf cannot exceed 3.00 V?
(s)
I need help for above questions.