:Consider the sinusoidal current i(t) = 25 cos (400 πt + 60°) A ?What is the phase angle in radians rad O F|N
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- During transcranial magnetic stimulation (TMS) treatment, a magnetic field typically of magnitude 0.40 T is produced in the brain using external coils. During the treatment, the current in the coils (and hence the magnetic field in the brain) rises from zero to its peak in about 90 us. Assume that the magnetic field is uniform over a circular area of diameter 2.0 cm inside the brain. What is the magnitude of the average induced emf | around this area in the brain during the treatment? |E| = 1.833 Incorrect VA 52-turn coil with an area of (5.5*10^-3)(m^2) is dropped from a position where B = 0.00 T to a new position where B = 0.55 T. If the displacement occurs in 0.25 s and the area of the coil is perpendicular to the magnetic field lines, what is the resulting average emf induced in the coil?A square loop of wire is inside a region of changing magnetic field (see figure below). The sides of the square loop are 0.1m with a resistor of resistance 2502 connected to one of the sides. The magnetic field increases linearly from 0.2T to 0.5T in 3s. What is the magnitude of E.M.F induced across the resistor. O ImV 10V 232 2 Ο Ιμν
- A loop of wire with radius rr = 0.072 m is in a magnetic field of magnitude B. The magnetic field is perpendicular to the plane of the loop. B changes from B1 = 0.39 T to B2 = 7.5 T in Δt = 1.5 s at a constant rate. A) Express the magnitude of the average induced electric field, E, induced in the loop in terms of ΔΦ , r , and Δt. --> E = ? (formula with symbols) B) Calculate the numerical value of E in N/C.The number of turns of a solenoid of length L = 0.5 m is N = 2000, the area of its cross section is A = 16 cm2. At a moment the current in the coil changes at a rate of 100 A/s. What is the induced voltage in that long straight wire of length 2l = 20 cm (the wire is next to the centre of the coil) which a) is perpendicular to the axis of the coil, if its two ends are equidistant from the coil, and its centre is at a distance of l from the coil; b) has the same direction as the previous one, and one of its end is at a distance of l from the axis of the coil?A very long solenoid of inner radius 3.25 cm creates an oscillating magnetic field B of the form B = Bmax COS (@t) For this solenoid, Bmax = 0.00325 T and o = 319 rad/s. What is the maximum value Emax of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid and near the center of the solenoid's length? -3 3.64 x10 Emax = %3D V/m Incorrect What is the maximum value of the induced electric field Emax at a perpendicular distance 5.25 cm from the axis of the solenoid and near the center of the solenoid's length? Emax %3D V/m Incorrect