Solutions to Problem set on Chapter 30

Solutions to Problem set on Chapter 30 - Problems on...

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1. a) The area of an elastic loop decreases at a constant rate, dA/dt = - 3.50 x 10 -2 m 2 /s. The loop is in a magnetic field B = 0.28 T whose direction is perpendicular to the plane of the loop. At t = 0, the loop has area A = 0.285 m 2 . Problems on Chapter 30 i. Determine the induced emf at t = 0 ii. Determine the induced emf at t = 2.00 s b) Suppose instead the radius of the loop increases at a constant rate dr/dt = +0.40 cm/s, i. Determine the emf induced in the loop at t = 0 ii. Determine the emf induced in the loop at t = 1.00 s 2. In the figure below a conducting rod with length L = 30.0 cm moves in a magnetic field B of magnitude 0.450 T directed into the plane of the figure. The rod moves with speed v = 5.00 m/s in the direction shown i. What is the motional emf induced in the rod? ii. What is the potential difference between the ends of the rod? iii. Which point , a or b , is at a higher potential? iv. When the charges in the rod are in equilibrium, what are the magnitude and direction of the electric field within the rod?
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Solutions to Problem set on Chapter 30 - Problems on...

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