this is all one question its just really long. a 1.5 v battery is connected to a
ID: 2116579 • Letter: T
Question
this is all one question its just really long.
a 1.5 v battery is connected to a parallel plate capacitor, one terminal to each plate
positive charge leaves the postive terminal of the battery and goes to one of the plates. The other plate
a. is unaffected b.recieves an equal positive charge c.recieves an equal negative charge.
The capacitor was initiall uncharged. After being connected to the battery, the capacitor
a. recieved a net postive charge b. recieved a net negative charge c. recieved no net charge
The potential difference across the capacitor was initially zero volts. After being connected to the battery the potential difference across the capacitor
a. remained zero b.increased c.increased in each plate separately on each plate but remained zero for the whole capacitor.
as the charge on either capacitor plate increased, the capacitance
a. decreased b.ermained the same c. increaesed
as the charge on the positive plate increased, how were the electric field between the plates and the voltage between the plate effected
a. both increased b.the electric field increased but not the voltage c. the voltage increased but not the electric field d.neither of them increased
If the number of coulombs stored on the capacitor triples, the energy stored becomes
a.9 b.3 c.0 d.1/2 e.1/9 , times initially stored.
Explanation / Answer
For the first answer, it is...
c) receives an equal negative charge (by conservation of charge)
Next
c) The capacitor receives no net charge (again by conervation of charge)
Next
b) increased (The potential difference increases)
Next
b) remained the same. Capacitance is a physical constant. Changes only by the construction of the capacitor, not the voltage or charge applied to it.
Next
a) both increaded. By formula V = Ed, you can see that V and E are directly proportional. As one increases, so must the other.
Next
By formula E = .5QV, you can see that charge and energy are directly proportional, so if you triple the charge you triple the stored energy.
Choice b) 3
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