A technician wearing a circular metal band on his wrist moves his hand (from a region where the magnetic field is zero) into a uniform magnetic field of magnitude 1.4 T in a time of 0.30 s. If the diameter of the band is 5.5 cm and the field is at an angle of 45° with the plane of the metal band while the hand is in the field, find the magnitude of the average emf induced in the band. mv

An MRI technician moves her hand from a region of very low magnetic field strength into an MRI scanner's 2.00 T field with her finger pointing in the direction of the field.An MRI technician moves her hand from a region of very low magnetic field strength into an MRI scanner's 2.00 T field with her finger pointing in the direction of the field. Find the average emf, in millivolts, induced in her wedding ring given its diameter is 2.41 cm, and assuming it takes 0.487 s to move it into the field.

A coil of 15 loops of wire is laying on the table. It experiences an increasing magnetic field going into the table. If the magnetic field goes from 0.15 T to 0.85 Tin one-third of a second and the coil has a diameter of 6 centimeters, determine the magnitude of the induced EMF and the direction of the induced current

A single circular loop of wire of radius 0.25m is positioned in a uniform magnetic field of 0.25T  that points out of the page. What is the magnitude of the average EMF induced in the loop if it's orientation changes from being in the plane of the page to out of/into the page over a time period of 0.59seconds?

A physician is using a device, with a thin circular coil of current-carrying wire of radius 1.7 mm, to stimulate neurons in a patient's brain. The coil is placed directly against the patient's skull, and everywhere within the area of the coil, the magnetic field changes from zero to 1.50 T (perpendicular to the plane of the coil) in 100 ms.   What is the magnitude of the average emf induced around the circumference of this circular area in the brain? Express your answer in units of mV.

Considerable scientific work is currently under way to determine whether weak oscillating magnetic fields such as those found near outdoor electric power lines can affect human health. One study indicated that a magnetic field of magnitude 1.40 x 10-³ T, oscillating at 60 Hz, might stimulate red blood cells to become cancerous. If the diameter of a red blood cell is 7.6 μm, determine the maximum emf that can be generated around the perimeter of the cell. V

Suppose a conducting rod is 94.5 cm long and slides on a pair of rails at 2.5 m/s. Part (a) What is the strength of the magnetic field in T if a 2 V emf is induced?

A physician is using a device, with a thin circular coil of current-carrying wire of radius 1.4 mm, to stimulate neurons in a patient's brain. The coil is placed directly against the patient's skull, and everywhere within the area of the coil, the magnetic field changes from zero to 1.50 T (perpendicular to the plane of the coil) in 100 ms. What is the magnitude of the average emf induced around the circumference of this circular area in the brain? Express your answer units of mv. mv

The 5-cm by 8-cm rectangular coil of a bicycle generator is rotating at a rate of 125 rpm in a 255-mT magnetic field. The output voltage of the generator is used to power a bicycle headlight that has a total resistance of 360 N. (a) How many turns are there in the coil if the peak output voltage is 1.8 V? N = turns (b) What is the rms-average current through the headlight? Irms mA

An MRI technician moves her hand from a region of very low magnetic field strength ( approximately zero) into the MRI scanner's field in a quick motion, taking 3.1 milliseconds. The MRI is essentially a solenoid, with 1500 loops of wire. By doing so, a current of 0.15 milliAmps is induced in her wedding ring. If her wedding ring has a diameter of 1.95 cm and it has measured resistance of 119 Ohms, what is the magnetic field in the MRI.