PRACTICE EXERCISE 7.7 A current distribution gives rise to the vector magnetic potential A = x'ya, + y'xa, - 4xyza, Wb/m. Calculate the following: (a) B at (-1, 2, 5) (b) The flux through the surface defined by z 1,0 sS1,-1syS4 Answer: (a) 20a, + 40a, + 3a, Wb/m2, (b) 20 Wb.

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Types of Charge Carriers

A carrier is a type of object which carries a particular thing from one point to another point. For instance, people use different vehicles from one place to another, and the vehicle carries those people and acts as a carrier.