Multiple Choice
A parallel plate capacitor consists of two plates of area separated by a distance and filled with a dielectric of permittivity . Which of the following gives the correct expression for its capacitance?
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26. Capacitors & Dielectrics
Parallel Plate Capacitors
Back26. Capacitors & Dielectrics
Parallel Plate Capacitors
- Multiple ChoiceA parallel plate capacitor is charged up using a battery. The battery is then removed, and the plate separation is increased by somebody wearing insulating gloves. What happens to the potential difference between the plates?1735views
- Multiple Choice
Two circular plates of radius 2cm are brought together so their separation is 5mm. What is the capacitance of these plates?
2601views39rank1comments - Multiple ChoiceA parallel plate capacitor consists of two circular plates of radius 12 cm separated by . What is the electric field strength inside the capacitor when the plates carry a charge of ?1636views
- Multiple Choice
A 3 F capacitor is given a potential difference across its plates of 10 V. What is the charge built up on its plates? If the source of the potential difference across the plates is removed, but the plates maintain their charge, what is the new potential difference across the capacitor if the distance between the plates is doubled?
2555views37rank4comments - Multiple ChoiceOne gallon of typical gasoline has 132 MJ of energy. You wish to store that much energy in a parallel-plate capacitor for an electric car. Assume you charge the capacitor using a power source. You can fill the capacitor with any of the materials listed in Table 21.3, but the spacing between plates has to be 0.080 mm. What is the minimum surface area required for the capacitor? This may help to understand challenges in engineering electric cars.1527views
- Multiple ChoiceWhat is the capacitance of a parallel plate capacitor with plate area separated by a distance ?1392views
- Multiple ChoiceWhat is the smallest possible capacitance of a parallel-plate capacitor with plate area separated by a distance , if you can fill it with any of the materials listed in Table 21.3?1718views1rank