An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.2 cm and it takes 0.425 s to move it into the field. (a) What average current is induced in the ring in A if its resistance is 0.0100 Ω? (b) What average power is dissipated in mW? (c) What magnetic field is induced at the center of the ring in T
An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.2 cm and it takes 0.425 s to move it into the field. (a) What average current is induced in the ring in A if its resistance is 0.0100 Ω? (b) What average power is dissipated in mW? (c) What magnetic field is induced at the center of the ring in T
Chapter13: Electromagnetic Induction
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An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.2 cm and it takes 0.425 s to move it into the field.
(a) What average current is induced in the ring in A if its resistance is 0.0100 Ω?
(b) What average power is dissipated in mW?
(c) What magnetic field is induced at the center of the ring in T?
Expert Solution
Answer for part (a)
The induced emf can be given by
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