Concept Question: CapacitorConcept Question: CapacitorConcept Question: Capacitor1Concept Question: CapacitorConsider a circular capacitor, with an Amperian loop (radius r) in the plane midway between the plates. When the capacitor is charging, the line integral of the magnetic field around the Amperian loop (in direction shown) is 1. Zero (No current through loop)2. Positive3. Negative4. Can’t tell (need to know direction of E)5. I don’t know2Concept Question: CapacitorIf instead of integrating around the pictured Amperian loop we were to integrate around an Amperian loop of the same radius as the plates (b) then the integral would be1. the same.2. larger.3. smaller.4. I don’t know.3Concept Question: CapacitorThe figures above show a side and top view of a capacitor with charge Q and electric and magnetic fields E and B at time t. At this time the charge Q is:1. Increasing in time2. Constant in time.3. Decreasing in time. 4. I don’t knowMIT OpenCourseWarehttp://ocw.mit.edu 8.02SC Physics II: Electricity and Magnetism Fall 2010 For information about citing these materials or our Terms of Use, visit:
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