Quiz
1. A square loop of area cm2 and turns rotates in an external steady magnetic field , T. The axis of rotation is . The loop rotates at a rate of 6000 RPM (revolutions per minute). What is the magnitude of the voltage induced at the terminals of the loop (at open circuit)?
, V
2. An external force is applied to a conducting bar supported by conducting rails, with which the bar is in perfect electrical contact (see figure). The bar moves with a constant velocity , m/s. A steady magnetic field is present: , T. The width between the supporting rails is , m. Find the voltage measured by the ideal voltmeter ().
3. If in Problem #2, the voltmeter is not ideal but with internal resistance , there is current I flowing through the sliding bar. Find the magnetic force due to the interaction of I with the magnetic field B.
, N
4. The magnetic intensity of a time-varying field is given by
, A/m.
What is the electric flux density vector ?
, C/m2
5. Is it possible to derive the divergence Maxwell equation
from any other Maxwell equation? If yes, which one?
No.
Yes:
6. Is it possible to derive the divergence Maxwell equation
from any other Maxwell equation and the continuity law, ? If yes, which one?