(a) Use Eq. 2 8 -1 , and the vector nature of B, to
Chapter 28, Problem 28.30(choose chapter or problem)
(a) Use Eq. 2 8 -1 , and the vector nature of B, to showthat the magnetic field lines around two long parallel wirescarrying equal currents I\ = I2 are as shown in Fig. 28-10.(b) Draw the equipotential lines around two stationary positiveelectric charges, (c) Are these two diagrams similar?Identical? Why or why not?
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