help with physics questions. Which of the following will NOT cause an induced cu

Question

help with physics questions. Which of the following will NOT cause an induced current in a loop of wire? The loop is moving around in a uniform magnetic field. The magnetic field through the loop is changed. The loop is moved into or out of a magnetic field. The loop changes in area or its angle relative to the magnetic field. Which of the following is a statement of Lew's law? The motion of a conductor of length l and speed v through a magnetic field B induces a potential difference v l B between the ends of the conductor. The rate at which work is done on a circuit exactly balances the rate at which energy is dissipated. A changing magnetic flux through a loop of wire will induce a current in that loop of wire. The induced current in a loop caused by a changing magnetic flux is always in a direction such that the induced magnetic field opposes the change in flux.

Explanation / Answer

Question4:

Only the changing magnetic field produces an induced current. So a loop in a uniform magnetic field not causes induced current.

Question5:

   Lenz's law: The induced current in a loop caused by a changing magnetic flux is always in a direction such that the induced magnetic field opposes the change in flux.

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