For a given wirewound core, an increase in current through the coil A. reverses

Question

For a given wirewound core, an increase in current through the coil
A. reverses the flux lines
B. decreases the flux density
C. increases the flux density
D. causes no change in flux density




If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density
A. increases
B. decreases
C. remains the same
D. doubles



The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is
A. 1,000 V
B. 2,000 V
C. 31.25 V
D. 3,125 V

Explanation / Answer

1-c 2-b 3-b

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