Explain what happens to the rotational speed of the ferromagnetic disc under the magnetic flux (B)... please explain clearly
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Explain what happens to the rotational speed of the ferromagnetic disc under the magnetic flux (B)... please explain clearly
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- Could you Please Help mesolve it correctly i only have 1 attempt left A permanent magnet has a magnetic dipole moment of 0.180 A m². The magnet is in the presence of an external uniform magnetic field (provided by current-carrying coils) with a magnitude of 0.0800 T, which makes an angle of 27.0° with the orientation of the permanent magnet. (a) What is the magnitude of the torque (in N m) on the permanent magnet? N.m (b) What is the potential energy (in J) of the system consisting of the permanent magnet and the magnetic field provided by the coils? JAs shown in the figure, a uniform conducting rod of length 0.38 m and mass 0.075 kg is in rotational equilibrium about the hinge at point O. A uniform magnetic field of 0.32 T is directed out of the plane of the page, perpendicular to the rod. Due to a battery and wires not shown, there is a current of 4.0 A in the rod directed toward point O. Determine the angle 8. O 0
- Consider a toroid with N loops, current I, and inner/outer radii a and brespectively. Which curve best describes the magnetic field around the toroid?= The rectangular loop of N turns shown below moves to the right with a constant velocity v while leaving the poles of a large electromagnet. Suppose the magnetic field oscillates with time according to B induced in the loop when its trailing side is a distance d from the right edge of the magnetic field region? Use the following as necessary: v, Bo, w, t, I, a, N and d. ε = IB x B X X X X/ * * * X a X X x : * V Bo sin(at). What then is the emfThe magnetic field inside a toroidal solenoid is not uniform as for a long, straight solenoid. Over the cross-sectional area of the toroid, the magnetic field is stronger near the inner radius of the torus and somewhat weaker near the outer radius, according to B(r) = mu0NI/2(pi)r. Use an approximate constant value for an equivalent, uniform magnetic field in a toroidal solenoid. Also, if the toroid has an inner radius of a and an outer radius of b, then the mean/average radius of the toroid rmean = (a + b)/2. a) Suppose a toroidal solenoid has a cross-sectional area of 6.25 cm2 and 500 turns of wire. If its self-inductance is 0.781 mH, calculate its approximate mean radius. b) If the current decreases from 5.84 A to 2.00 A in 3.00 ms, what is the induced voltage in this solenoid?