Discussion
Consider the following statements about Maxwell's equations.
1. Two of them are divergence equations 2. One of them has zero on the right in all circumstances 3. They determine the fields without any information about the medium
Answer: B
Correct answer: 1 and 2 only are correct
Statements 1 and 2 are correct: two of the four are divergence equations, and the magnetic one has zero on the right in every circumstance. Statement 3 is wrong - Maxwell’s equations relate the four field quantities but do not connect \( \mathbf{D} \) to \( \mathbf{E} \) or \( \mathbf{B} \) to \( \mathbf{H} \). The constitutive relations of the medium are needed as well before anything can be solved.
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