1) A solenoid 25 cm long and a with cross sectional area of 0.5 cm² contains 400 turns of wire and carries a current of 80 A. Calculate: a) The magnetic field in the solenoid b) The energy density in the magnetic field if the solenoid is filled with air c) The total energy contained in the coil's magnetic field (assume the field is uniform) d) The inductance of the solenoid.

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Q: 44. Let A=(2 m)i +(6 m)j – (3 m)k and B = (4 m)i +(2 m)j+(1 m)k. Then A · B equals: A) (8 m)î +(12…

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