A coil of wire consists of 20 turns each of which has an area of 0.0015 m². A magnetic field is perpendicular to the surface. Initially, the magnitude of the magnetic field is 0.050 T and 0.10s later, it has increased to 0.060 T. Find the average e m f induced in the coil during this time.
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- the coil's sides are 14.6 cm long, the external magnetic field strength is Bext = 0.783 T, the coilhas 37 turns, and it takes .765 s to flip the coil over.Calculate the magnitude of the emf induced in the coil when you flip it overChapter 30, Problem 023SN The figure shows two parallel loops of wire having a common axis. The smaller loop (radius r) is above the larger loop (radius R) by a distance x>>R. Consequently, the magnetic field due to the counterclockwise current / in the larger loop is nearly constant throughout the smaller loop. Suppose that x is increasing at the constant rate dx/dt = v. (a) Find an expression for the magnetic flux through the area of the smaller loop as a function of x. In the smaller loop, find (b) an expression for the magnitude of the induced emf and (c) the direction of the induced current. R. (a) ? ENI (ь) 2 Edit (c)An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 1.60 T field with his fingers pointing in the direction of the field. Find the magnitude of the average emf (in V) induced in his wedding ring, given its diameter is 2.26 cm and assuming it takes 0.210 s to move it into the field.
- Consider the Hall voltage induced on a patient’s heart while being scanned by an MRI unit. l = 8.5 cmv = 7.5 cm/s Approximate the conducting path on the heart wall by a wire 8.5 cm long that moves at 7.5 cm/s perpendicular to a 1.50 T magnetic field. Find the Hall voltage across the patient's heart in mV.A 48 turn coil of wire creates a circular area of 6.95 cm2. If a magnetic field of 90.79 T hits this area at a right angle, what is the magnetic flux (in Wb) through the coil?A circular coil of wire has radius 0.37 m, with 979 turns of wire in the coil. It is located in a magnetic field of 1.90 T, directed perpendicular to the plane of the loop. (a) What is the magnetic flux through the loop (in T m²)? (b) Now suppose the coil is attached to a 160 ohm resistor, and the magnetic field decreases to 0 in 1 second. What is the induced current in the circuit?