Chapter 17. Charge, voltage, and capacitance for a capacitor (17-14)

Question

xRKYhIITIyhBfc8tgqtNmup0/rJbXnrgDewKiWtfzzJaWK59p6psv8Hz3u8EGDz16672/Fyf/DGyms6yAMh5SSWnRUpPKYg2lFJNX/Yv8hj9ZkqFIw8/it5gzJRBJzobPRO7gFIlByFu0BO9
{"title":"A capacitor carries a charge +q on its positive plate and a charge −q on its negative plate","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"3,20,44,64\"}]"} {"title":"The magnitude of q is directly proportional to V, the voltage (potential difference) between the plates.","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"148,6,191,56\"}]"} {"title":"The constant of proportionality between charge q and voltage V is the capacitance C of the capacitor.","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"227,24,228,24\"},{\"shape\":\"rect\",\"coords\":\"108,9,148,53\"}]"}

Question

vHW+KYnNS0nTZ/4eaexgzmETbufQ5EV0fkOlvKTQD+i2FHAL8YJ98SEdsHaLONnFW/H0gumytlhEcjAUA1QFz6SuE5JMX7uTo1muGvvmwhFWRxlw7OtqcJ34ntPiOsxK
{"title":"A capacitor carries a charge +q on its positive plate and a charge −q on its negative plate","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"3,20,44,64\"}]"} {"title":"The magnitude of q is directly proportional to V, the voltage (potential difference) between the plates.","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"148,6,191,56\"}]"} {"title":"The constant of proportionality between charge q and voltage V is the capacitance C of the capacitor.","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"227,24,228,24\"},{\"shape\":\"rect\",\"coords\":\"108,9,148,53\"}]"}

Question

OYdCyKtMCHS3zp005KJZl9+bMlJZsu8iWkwG2TbmAiQGhdfemCriwfD7rIleyVOq6IdVktNYe5Q1cGKd/GLmSSTC4LZS2VyWdTh9UEm7wINxQ3d6o9RSkfw3s7qq3UkPyiMEcRwwBzHDzhR4zzKmqxjVJQlYMlC/
{"title":"A capacitor carries a charge +q on its positive plate and a charge −q on its negative plate","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"3,20,44,64\"}]"} {"title":"The magnitude of q is directly proportional to V, the voltage (potential difference) between the plates.","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"148,6,191,56\"}]"} {"title":"The constant of proportionality between charge q and voltage V is the capacitance C of the capacitor.","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"227,24,228,24\"},{\"shape\":\"rect\",\"coords\":\"108,9,148,53\"}]"}

Review

For a parallel-plate capacitor, \(C\) depends only on the area \(A\) of the plates, the distance \(d\) between them, and the material between them. We’ve assumed that the plates are separated by vacuum; in Section 17-8 we’ll explore what happens if the space between the capacitor plates is filled with a different material. Capacitance is therefore a compact way to summarize the electrical properties of a capacitor. In particular, capacitance tells us the amount of charge that can be stored on a capacitor held at a given voltage.