In Figure 23.61 there is a circular region of radius r1in which there is a uniform magnetic field B pointing out of the paper (the magnetic field is essentially zero outside this region). The magnetic...

In Figure 23.61 there is a circular region of radius r1in which there is a uniform magnetic field B pointing out of the paper (the magnetic field is essentially zero outside this region). The magnetic field is decreasing at this moment at a rate . A wire of radius r2and resistance R lies entirely outside the magnetic-field region (where there is no magnetic field). In which direction does conventional current I flow in the ring? What is the magnitude of the current I ? Show the pattern of (non-Coulomb) electric field in the ring. What is the magnitude ENC of the non-Coulomb electric field?