Magnetism and Electromagnetism
A circular loop of wire is placed in a uniform magnetic field. If the angle between the magnetic field and the area vector of the loop is 0 degrees, the magnetic flux through the loop is:
A square loop with sides of length 0.2 m is placed in a uniform magnetic field of 0.3 T. The angle between the magnetic field and the area vector of the loop is 60 degrees. What is the magnetic flux through the loop?
According to Faraday's Law, what is the primary factor that determines the magnitude of the induced emf in a coil?
A coil with 200 turns is placed in a magnetic field. The magnetic flux through the coil changes from 0.2 Wb to 0.5 Wb in 0.5 seconds. What is the magnitude of the induced emf in the coil?
A conducting rod of length moves with a velocity on two parallel conducting rails in a uniform magnetic field that is perpendicular to the plane of the rails. If the length of the rod is doubled, what happens to the induced current?
According to Lenz's Law, the direction of the induced current in a loop of wire will:
A circular loop of wire is placed in a magnetic field. The magnetic field is directed into the page and is decreasing in magnitude. What is the direction of the induced current in the loop?
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A square loop is placed near a wire carrying an increasing current. Determine the direction of the induced current in the loop.
What is the primary function of a generator?
A transformer has 200 turns in its primary coil and 800 turns in its secondary coil. If the input voltage to the primary coil is 50 V, what is the output voltage in the secondary coil?