(5 points per question): 1. A square loop of wire lies in the plane of the page.
ID: 2034809 • Letter: #
Question
(5 points per question): 1. A square loop of wire lies in the plane of the page. A uniform constant magnetic field is directed into the page. When the square loop just starts to rotate about the axis as shown. The induced current in the loop its C. Zero Depends upon whether B is decreasing at a constant rate E. D. Clockwise in two of the loop sides and counterclockwise in the other two You push a permanent magnet with its north pole away from you toward a vertical loop of conducting wire in front of you. Before the north pole enters the loop, the induced current in the loop is A. zero B. clockwise C. counterclockwise D. to your left E. to your right 2. II. Objective Questions (5 points per question): 3. A 10-turn conducting loop with a radius of 3.0 cm spins at 60 revolutions per second in a magnetic field of 0.50 T. The maximum emf generated is: A. 0.014 v B. 0.53 Vv C, 5.3 V D. 18 V E. 180 V A single circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of 0.60 T. The plane of the loop is perpendicular to the direction of magnetic field. In a time interval of 0.10s, the magnetic field changes to the opposite direction with a magnitude of 0.40 T. What us the magnitude of the average emf induced in the loop? A. 10.00v B. 1.25V C. 250.0 mV D. 50.0 mV E. 10.00 mV 4.Explanation / Answer
1) It will be in clockwise direction i.e Option B
Explanation
From lenz's law current direction is such that it opposes the change in magnetic field.So it will be in clockwise direction.
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