Not secure-gauss. vaniercollege. qc. ca integrated concepts: an mri technician moves his hand from a region of very low magnetic field strength into an mri scanner's 2.04 t field with his fingers pointing in the direction of the field. a) find the average emf induced in his wedding ring, given its diameter is 2.17 cm and assuming it takes 0.255 s to move it into the ield. mv b) what current is induced in the ring if its resistance is 0.0101 ω? c) what average power is dissipated? mw d) what magnetic field is induced at the center of the ring? what are the directions of the induced magnetic field and current, respectively, relative to the mri's field? a. into mri, counterclockwise b. out of mri, counterclockwise c. into mri, clockwise d. out of mri, clockwise

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: