A rectangular loop (area = 0.15 m2) turns in a uniform magnetic field with B = 0.20 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is (?/2) rad and increasing at the rate of 0.60 rad/s, what is the magnitude of the emf induced in the loop?
a. 24 mV
b. zero
c. 18 mV
d. 20 mV
e. 6.0 mV
c
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A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.40). If the speed of the beam before it enters the plastic is 3.00 × 10^8 m/s, what is its speed inside the block?
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The flux through a coil changes from 4.0 × 10-5 Wb to 5.0 × 10-5 Wb in 0.10 s. What emf is induced in this coil?
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At which is the potential smallest?
A. A B. B C. C D. D E. E F. None of the labeled points