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q = C x V, The amount of charge on each plate is equal and the same as q.

So: q = 0.000004 x 12 = .000048 or 48 uQ

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Q: How much charge is on each plate of a 4.00 micro-Farad capacitor when connected to a 12.0-V battery?
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An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still?

the charge on the capacitor had increased.


What does micro farads measure?

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In a way it can be. If a capacitor is connected to a battery, it will charge to the battery voltage. Then the capacitor can be discharged into a circuit to do work. But the capacitor doesn't store electrons, it stores an electrical field in the dielectric. If you mean storing the flowing electrons in a conductor, then they can't be stored except in a magnetic containment field such as in a cyclotron. A rechargable battery doesn't store electrons either, it stores energy in a chemical form which is converted to an electrical form when the battery is connected to a circuit.


What happens when a charged capacitor is connected across an uncharged one?

When a charged capacitor is connected to an uncharged capacitor charge flows from the charged to the uncharged capacitor until there is no net force on the charge carriers. This means that both capacitors are at the same potential, because if they were not, there would be an electric fieldand hence a force on the charge carriers of magnitudeand the charge carriers would move to equalize the potentials and reduce the electric field and hence the force, eventually to zero. Of course, as charge flows from one capacitor to the other, the total charge is conserved. In the diagram above, when switch is closed chraged flows from the top capacitor to the bottom. When charge has stopped flowing, Also, because the potentials are equal(1) Suppose then that the capacitor at top left is initially charged to potential ofand that it has capacitanceand is then connected to a capacitance Initiallystores a charge Then (3) From (1) (4) Sub (4) into (1) to get Now usefor either capacitor to findUsing it for (2) gives from A Level Physics Notes


What happens to the voltage across a capacitor as it discharges?

well to get the answer first know the principle by which a capacitor(consider a capacitor without dielectric) gets charged .let a capacitor with plates p1 and p2 and resistor in parlell are connected to a DC source , when the switch is closed the circuit is in ON state and current starts flowing ,assume the flow of current as the movement of negative charges then the concept would be much clear. assume that p1 is connected with positive terminal of the battery and p2 with the negative terminal ,now as the switch is closed the negative charge on p1 is attracted by the positive terminal of the battery and is driven to the other plate p2 of capacitor.as this process continues charge seperation increases and potential difference starts getting developed and after a very long time the potential diff. across capacitor becomes equal to the applied voltage V. during discharging first of all we short the battery , this mplies that we are short circuiting plates p1 and p2 so again charge redistribution takes place and after a longtime both the plates become electrically nuetral

Related questions

An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still?

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