(a) When a parallel plate capacitor is connected across a dc battery, explain briefly how the capacitor gets charged. (b) A parallel plate capacitor of capacitance ‘C' is charged to ‘V' volt by a battery. After some time the battery is disconnected and the distance between the plates is doubled.
When a parallel plate capacitor is connected?
(a) When a parallel plate capacitor is connected across a dc battery, explain briefly how the capacitor gets charged. (b) A parallel plate capacitor of capacitance ‘C' is charged to ‘V' volt by a battery. After some time the battery is disconnected and the distance between the plates is doubled.
When a parallel plate capacitor is connected across a DC battery?
Thus, the current flowing through the circuit gradually becomes less and then zero till the voltage of the capacitor is
exactly equal but opposite to
the voltage of the battery. This is how the capacitor gets charged when it is connected across a d.c. battery.
When a parallel plate capacitor is connected to a source of constant potential difference *?
When a parallel plates capacitor is connected to a source of constant potential difference, a)
All the charge drawn from the source is stored in the capacitor
. All the energy drawn from the source is stored in the capacitor.
When an uncharged capacitor is connected across a charged capacitor?
Whenever a charged capacitor is connected to an uncharged capacitor there is a flow of electrons from charged to uncharged
until a steady state situation is arrived
. I.e. After this no transfer of charge happens i.e. both the capacitors are in equilibrium condition.
What happens to the stored energy if the plate separation is doubled while the capacitor remains connected to the battery?
A fully charged parallel-plate capacitor remains connected to a battery while you slide a dielectric between the plates. … What happens to the stored energy if the plate separation is doubled while the capacitor remains connected to the battery?
It decreases by a factor of 2
.
3.
On which capacitance of capacitor does not depend?
Here, A is the area of the plates of the capacitor and d is the distance between the plates. So, we can clearly see that the capacitance of a capacitor does depend on the size and shape of the plates and the separation between the plates; it does not depend on
the charges on the plates
.
How do you charge a parallel plate capacitor?
The parallel plate capacitor shown in Figure 4 has two identical conducting plates, each having a surface area A, separated by a distance d (with no material between the plates). When a
voltage
V is applied to the capacitor, it stores a charge Q, as shown.
What happens if a charged capacitor is connected to a battery?
A capacitor, when connected to a battery, conducts for awhile but short while after that it acts as an open circuit. If an uncharged capacitor C is connected to a battery of potential V, then
a transient current flows as the capacitor plates get charged
.
What happens to the charge on each plate if the capacitor remains connected to a battery while a dielectric is inserted?
When a dielectric is inserted into a charged capacitor, the dielectric is polarized by the field. … If the capacitor is connected to a battery at the time,
the battery is able to store more charge in the capacitor
, bringing the field back to its original value.
When an uncharged capacitor is connected to a battery how much energy supplied by the battery is lost as heat while charging the capacitor?
Hence, We can say
half the energy
supplied by the battery is lost as heat or in other forms.
What happens if we double the plate separation?
The electric field is doubled
if we double plate separation. There is a halving of the potential difference. Each plate has its charge halved.
What happens to the energy stored in a capacitor if the plates?
Answer: The energy of the stored capacitor is
stored in the electric field that exists between them
. when the plates are moved there is no effect on the stored energy between them and energy of the capacitor remains constant.
What is the area of the plate of a 3 micro F parallel plate capacitor if the separation between the plates is 5 mm?
140. What is the area of the plates of a 3F parallel plate capacitor, if the separation between the plates is 5 mm?
1.694 × 10
9
m
.
What capacitance of capacitor depends on two things?
There are three factors which influence capacitance:
the size of the conductors, the size of the gap between them, and the material between them (the dielectric)
. The bigger the conductors, the bigger the capacitance.
