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In Section 4.3, we claim that in analyzing electromagnetic waves, we could handle the fieldsandtogether with complex numbers. Show that if we define an "electromagnetic field"GE+icB, then the two of Maxwell's equations that linkEandB.(4-6c) and(4-6d) , become just one:

Gdl=ictGdA

Electromagnetic waves would have to obey this complex equation. Does this change of approach make EandB/or complex? (Remember how a complex number is defined.)

Short Answer

Expert verified

Start with Maxwell's equations and utilize the identity G=E+icBto get to the given equation; the electric and magnetic fields don't have to be complicated.

Step by step solution

01

Significance of Maxwell’s equations

Maxwell's equations formulate a relationship between the electric and magnetic fields, that how they are correlated and complementary to each other.

02

Step 2:Maxwell’s equation to relate  Eand  B.

We should be able to merge equations (4-6c)and (4-6d)into a single equation for both Eand B if we start with equations (4-6c)and (4-6d)and use the supplied identity .

G=E+icB

Edl=tBdA鈥︹︹︹︹︹.. (1)

Bdl=1c2tEdA鈥︹︹︹︹︹.. (2)

Equation(2) is multiplied byic, and equations (1) and (2) are added together.

Edl+icBdl=tBdA+ictEdA

(E+icB)dl=ict(icB+E)dA

Since, G=E+icB

Gdl=ictGdA

As a result, we were able to unify the two equations for electric and magnetic fields into a single equation that includes both in a single variable termed as G. The magnetic and electric fields, on the other hand, haven't been restricted in any way during the derivation, thus they don't have to be complicated.

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