Imagine that, at a certain point in empty space, the curl of the magnetic field has a positive x component. What can we conclude from this information?

A. Ex must be positive at that point.
B. Ex must be negative at that point.
C. Ex must be zero at that point.
D. Ex must be increasing with time at that point.
E. Ex must be decreasing with time at that point.
F. The magnetic field described is not physically possible.
T. None of the above.


D. Ex must be increasing with time at that point.

Physics & Space Science

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