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The Magnetic Field between Capacitor Plates

A capacitor consists of two parallel circular plates of radiusL.Thecapacitor has capacitance Cand is being charged in a simple circuitloop. The circuit has aninitial current I_0 and consists of thecapacitor, a battery with voltageV,and a resistor with resistanceR20651.jpgWhat is the magnetic field in the middle ofthe capacitor plates at a distance dfrom the center, as a function of time t?
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