Question

How much energy is stored in a 2.60-cm-diameter, 13.0-cm-long solenoid that has 160 turns of wire and carries a current of 0.780 A ?

Answer #1

And the volume of the solenoid is

where, d is the diameter of the solenoid. And so, the energy stored
in the solenoid is

And so, given the values,

d = 2.60 cm = 0.026 m, N = 160 , I = 0.780 A, L = 13.0
cm = 0.13 m,

and so, we get

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