26. Capacitors & Dielectrics
Intro To Dielectrics
26. Capacitors & Dielectrics
Intro To Dielectrics
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- Multiple Choice
A capacitor in a vacuum is charged to 64V between its plates, then disconnected. Initially, each plate has 32μC. An insulating slab of dielectric glass with k = 3 is placed between the plates. a) What is the capacitor's new capacitance? b) What is the new voltage across the capacitor?
761views16rank - Multiple Choice
A parallel plate capacitor is formed by bringing two circular plates, of radius 0.5 cm, to a distance of 2 mm apart. The capacitor is made so that it has a dielectric of constant κ between the plates. When the charge on the capacitor is 3 nC, the voltage of the capacitor is 5000 V. What is the dielectric constant?
1324views14rank4comments - Multiple ChoiceA parallel plate capacitor with air separating the plates is fully charged by a battery. The battery is disconnected and an insulator with dielectric constant of 1.5 is inserted between the plates by somebody wearing insulating gloves. What happens to the potential difference between the plates?524views
- Multiple ChoiceAn insulator is a material that?8views