2. Figure 2 shows a thin dielectric disk whose upper surface is uniformly covered by negative...

  

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2. Figure 2 shows a thin dielectric disk whose upper surface is uniformly covered by negative charge of surface charge density o <0. The disk has radius R and rotates around its axis with angular frequency w as shown. Would the magnetic field be produced as a result of this rotation and why? If yes, find magnetic field's magnitude B and direction at point C on the disk axis at distance a from the charged surface as indicated in the figure. B a ic Ba Figure 2: Illustration for problem 2. 2. Figure 2 shows a thin dielectric disk whose upper surface is uniformly covered by negative charge of surface charge density o <0. The disk has radius R and rotates around its axis with angular frequency w as shown. Would the magnetic field be produced as a result of this rotation and why? If yes, find magnetic field's magnitude B and direction at point C on the disk axis at distance a from the charged surface as indicated in the figure. B a ic Ba Figure 2: Illustration for problem 2.