An emf is induced in a conducting loop of wire 1.11m long, Ask an Expert

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Q. A pendulum is made by tying a 678 g ball to a 53-cm-long string. The pendulum is pulled 49° to one side, then released. What is the ball's speed at the lowest point of its trajectory?

Q. An emf is induced in a conducting loop of wire 1.11m long as its shape is changed from square to circular.Find the average magnitude of the induced emf if the change in shape occurs in 4.03s and the local 0.135-T magnetic field is perpendicular to the plane of the loop.

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