Chapter 29, Problem 043 The figure shows a cross section across a long cylindrical conductor of radius a = 1.99 cm carrying uniform current 70.2 A. What is the magnitude of the current's magnetic field at radial distance (a) 0, (b) 1.17 cm, (c) 1.99 cm (wire's surface), (d)2.87 cm?

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A: Solution:-Given thatq1=-9 μC=-9×10-6Cq2=2 μC=2×10-6Cq3=3 μC=3×10-6Cx1=-1 mx2=1 mx3=1.5 mx=0.8 m

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Q: 5. Three +5 µC charges form an equilateral triangle with sides of length 20cm. One charge is located…

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