Consider the cylindrical conductor with a hollow center and copper wals of thickness b-a as shown. The radi of the inner and outer wals are a and b respectivel, and the current I in unitormly spread over the cross section of the copper (shaded region) What is the magnitude of the magnetic field (nT) atr334 cm a-1.67 cm, b- 4.73 cm, I-32 mA Ho- 4n x 10 Tm/A Provide your answer with one decimal place. (out of page)

a strip of copper wire thickness 1mm carries currentt 10a in a magnetic field stranght B=1T. n=1*10^29 electrons per m^3, Whats the hall voltage?

(b) Figure 6 shows a metal plate moves with constant velocity through a uniform magnetic field, B. The magnitude of the magnetic field is 2.0 mT directed perpendicular to the plate. The dimension of the plate is 5.0 cm long, 0.5 cm wide and 1.0 mm thick. If the metal plate moves with the speed of 1.0 m/s, calculate the potential difference generated between points x and y across the plates. х В Figure 6

The net magnetic field at the center of the loop has magnitude HoI t- Bnet R What is the number t? I R I R