For a hypothetical ferromagnetic material, calculate the number of μB per atom whose structure is BCC. Also, the atomic radius is 0.21089 nm and the saturation magnetic flux density is 0.58712 T.
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A1.
For a hypothetical ferromagnetic material, calculate the number of μB per atom whose structure is BCC. Also, the atomic radius is 0.21089 nm and the saturation magnetic flux density is 0.58712 T.
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- 29.5. A magnetic flux of 50 µWb passes through a perpendicular loop of wire having an area of 0.78 m2. What is the magnetic flux density? Ans. 64.1 uT 28 6c. What is the resistance of the coil given that the diameter of the wire is 2.00 mm? (Recall, resistance of wire is given by R = ρL/A, where ρ is the resistivity of the metal, L is the length of the wire, and A is the cross-sectional area.)The magnetic field inside a superconducting solenoid is 4.50 T. The solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. Determine the magnetic energy density in the field.
- A 1450 turn coil of wire, 6.16 cm in diameter, is in a magnetic field that drops from 0.723 T to 0 T in 41.9 ms. The axis of the coil is parallel to the field. What is the emf (in V) of the coil?The small currents in axons corresponding to nerve impulses produce measurable magneticfields. A typical axion carries a peak current of 0. 040 μA. What is the strength of the field at a distanceof 0.9 mm?QUESTION 1 https://per.physics.illinois.edu/per/IE/ie.pl?phys112/ie/08/IE_movingcoil X X X X XX X W X X X X XX X X X X X X X X X X X X X X X Lg At t=0, a rectangular coil of resistance R = 2 ohms and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.6 T directed into the screen as shown. The length of the region containing the magnetic field is LB = 15 cm. The coil is observed to move at constant vėlocity v = 5 cm/s. What is the force required at time t = 0.8 sec to maintain this velocity? Answer in uN (u = micro = EE-06)
- 005 A uniform electric field of magnitude 5.06 x 10 V/m throughout a cylindrical volume re- sults in a total energy of 2.95 µJ. What magnetic field over this same region stores the same total energy? Answer in units of T.3. A 21.0 cm diameter coil consists of 34 turns of cylindrical copper wire 2.80 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 8.50 × 10−³ T/s. Determine the current in the loop in milli-amps (the resistivity for copper is 1.72 × 10-³2.m). mAAn 18 cm diameter loop of wire consists of 28 turns of circular copper wire 2.5 mm indiameter. A uniform magnetic field, perpendicular to the plane of the loop, changes ata rate of 8.5 x 10-3 T/s. What is the current in the loop? The resistivity of copper is 1.68 x 10-8 W m. (Hint: solve for V and R, then solve for I)