Facts about parallel plate capacitors. For each statement, select \"True\" or \"
ID: 2054572 • Letter: F
Question
Facts about parallel plate capacitors. For each statement, select "True" or "False".1) Charge is stored in the dielectric medium between the plates of a capacitor.
2) The capacitance of a parallel plate capacitor is directly proportional to the separation of the plates.
3) Adding a dielectric between the plates of an isolated air-filled charged capacitor reduces the charge stored on the device.
4) Capacitance is the property of a device that enables it to store current.
5) The charges on the plates of a capacitor are equal and opposite.
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Explanation / Answer
1. True Capacitance is also a measure of the amount of electric potential energy stored (or separated) for a given electric potential. common form of energy storage device is a parallel-plate capacitor. The energy (measured in joules) stored in a capacitor is equal to the work done to charge it. Consider a capacitor of capacitance C, holding a charge +q on one plate and -q on the other. Moving a small element of charge dq from one plate to the other against the potential difference V = q/C requires the work 2. False In a parallel plate capacitor, capacitance is directly proportional to the surface area of the conductor plates and inversely proportional to the separation distance between the plates. If the charges on the plates are +q and -q, and V gives the voltage between the plates, then the capacitance is given by C = {q}/{V} 3. True 4. True Capacitance the property of a system that enables it to store electric charge In an electric circuit the device designed to store charge is called a capacitor . 5. True If a DC voltage is applied to the capacitors conductive plates, a current is unable to flow through the capacitor itself due to the dielectric insulation and an electrical charge builds up on the capacitors plates with electrons producing a positive charge on one and an equal and opposite negative charge on the other plate.
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