4) Which scenario will result in the greatest EMF in a loop of wi re. The magnetic field decreasing from 1.0 Tesla to 0 Tesla The magnetic field very slowly switching from +1.0 Tesla to -1.0 Tesla The magnetic field very quicklyswitching -0.5 Tesla to +0.5 Tesla The loop rotating 90° in a fixed 1.0 Tesla magnetic field Explain: ODDD
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- 9Current Attempt in Progress A circular coil (720 turns, radius = 0.084 m) is rotating in a uniform magnetic field. At t=0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.021 s, the normal makes an angle of 45° with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.048 V is induced in the coil. Find the magnitude of the magnetic field at the location of the coil. Number UnitsPM End Date: 4/29/2021 11:00:00 PM (10%) Problem 9: A circular wire loop of radius r= 0.35 m and resistance R = 9.7 Q rotates about a shaft through its diameter at a constant rate of f= 5.3 Hz in a uniform B = 0.34-T magnetic field directed perpendicular to the rotation axis. The plane of the loop is perpendicular to the magnetic field at time t = 0. A 17% Part (a) Select the correct expression for the time-dependent magnetic flux through the loop. Grade TB cos(27 f)r2 D = TB cos( ft)r2 O = 2nB cos(2nft)r² Deduct Potenti Submis Attemp (20% detaile O = TB cos(2n ft)r O = TB cos(27 ft)r² TB Cos(27 ft)r² %3D Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. 17% Part (b) Find the value of the magnetic flux through the loop, in webers, at time t = 0.114 s. A 17% Part (c) Select the expression for the time-dependent emf induced in the loop based on the expression you entered in part (a) B. 17% Part (d) Calculate the induced…
- EM Induction Item 4(a) What is the maximum torque on a 181-turn square loop of wire 18.0 cm on a side that carries a 38.0-A current in a 1.60-T field? N. m (b) What is the torque when o is 20.0°? N.m2. The figure below shows a metal plate with a width of w = 2 cm and a thickness of t = 0.1 cm. An electric current I = 20A is applied to it and placed in a magnetic field B in the direction shown in the figure. When the applied magnetic field is 2 tesla, the resulting Hall voltage of 4.28 V. Based on the above, determine the electron drift velocity (Vd)!