Learning Goal To Understand The Terms In Faraday S Law And To Be Able To Identify The Magnitude And Direction Of Indu 1 (35.57 KiB) Viewed 11 times
Learning Goal To Understand The Terms In Faraday S Law And To Be Able To Identify The Magnitude And Direction Of Indu 2 (46.18 KiB) Viewed 11 times
Learning Goal To Understand The Terms In Faraday S Law And To Be Able To Identify The Magnitude And Direction Of Indu 3 (32.46 KiB) Viewed 11 times
Learning Goal To Understand The Terms In Faraday S Law And To Be Able To Identify The Magnitude And Direction Of Indu 4 (35.97 KiB) Viewed 11 times
> Learning Goal: To understand the terms in Faraday's law and to be able to identify the magnitude and direction of induced emf Faraday's law states that induced emf is directly proportional to the time rate of change of magnetic flux Mathematically, it can be written as E= A At Aº where is the emf induced in a closed loop. and At is the rate of change of the magnetic flux through a surface bounded by the loop. For uniform magnetic fields the magnetic flux is given by 4 BA cos(8), where is the angle between the magnetic field B and the normal to the surface of area A Figure 1 of 1 > In this problem, we will consider a rectangular loop of wire with sides z and y placed in a region where a uniformi magnetic field B exists as shown in (Figure 1). The resistance of the loop is R. For the purposes of this problem we will assume that the area vector A points out of the page. Initially, the field is perpendicular to the plane of the loop and is directed out of the page. The loop can rotate about ether the vertical or horizontal axis, passing through the midpoints of the opposite sides, as shown. Part A Which of the following changes would induce an electromotive force (em) in the loop? When you consider each option, assume that no other changes occur. Check all that apply. The magnitude of increases The magnitude of decreases The loop rotates about the vertical axis (vertical dotted line) shown in the diagram The loop rotates about the horizontal axis (horizontal dotted line) shown in the diagram. Review The loop moves to the right while remaining in the plane of the page. The loop moves toward you, out of the page, while remaining parallel to itself Submit Request Answer
Part B Find the flux B through the loop. Express your answer in terms of x, y, and B. $B= Submit Part C E = IVE ΑΣΦ Submit Request Answer If the magnetic field steadily decreases from B to zero during a time interval t, what is the magnitude E of the induced emf? Express your answer in terms of x, y, B, and t. View Available Hint(s) F 195] ΑΣΦ ? ?
Part D If the magnetic field steadily decreases from B to zero during a time interval t, what is the magnitude I of the induced current? Express your answer in terms of x, y, B, t, and the resistance R of the wire. I = 15. ΑΣΦ Submit Part E Request Answer If the magnetic field steadily decreases from B to zero during a time interval t, what is the direction of the induced current? clockwise counterclockwise Submit ? Request Answer
Part F Which of the following changes would result in a clockwise emf in the loop? When you consider each option, assume that no other changes occur. Check all that apply. The magnitude of B increases. The magnitude of B decreases. The loop rotates through 45 degrees about the vertical axis (vertical dotted line) shown in the diagram. The loop rotates through 45 degrees about the horizontal axis (horizontal dotted line) shown in the diagram. The loop moves to the right while remaining in the plane of the page. The loop moves toward you, out of the page, while remaining parallel to itself. Submit Request Answer
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