Question 1 A long current carrying hollow wire has an inner radius of 1.50 cm an

Question

Question 1 A long current carrying hollow wire has an inner radius of 1.50 cm and an outer radius of 14.7 cm. The current in the wire is 13.0 A. Find the magnetic field at a distance 8.80 cm from the center of the wire. Question 2 In the figure provided, an antiproton (same properties as a proton except that q-e) is moving in through electric and magnetic fields. If B-3.59 T, E 5.51x105 V/m and v 158 m/s, what are the magnitude and direction of the antiproton's acceleration at this instant? Magnitude: Direction: Down Left Up Right

Explanation / Answer

magnetic field inside the point is B = mu_o*I*(r^2-a^2)/(2*pi*r(b^2-a^2))

here I = 13 A

r = 8.8 cm

a = 1.5 cm

b = 14.7 cm

then

B = (4*3.142*10^-7*13*(8.8^2-1.5^2))/(2*3.142*8.8*(14.7^2-1.5^2))

B = 1.04*10^-7 T

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