Minimum number of capacitors of 4μF capacitance each required to obtain a capacitor of 10μF will be
Sahay Sir > Question Answers > Minimum number of capacitors of 4μF capacitance each required to obtain a capacitor of 10μF will be
The figure shows two identical parallel plate capacitors connected to a battery with the switch S closed. The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant 2. Find the ratio of the total electrostatic energy stored in both capacitors before and after the introduction of the dielectric.
30
Nov
The figure shows two identical parallel plate capacitors connected to a battery with the switch S closed. The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant 2. Find the ratio of the total electrostatic energy stored in both capacitors before and [...]
The space between plates of a parallel plate capacitor is filled by a dielectric and it is charged and then battery is removed. Now dielectric slab is slowly drawn out of the capacitor parallel to the plates. The variation of the potential of capacitor with respect to the length of the dielectric plate drawn out is
30
Nov
The space between plates of a parallel plate capacitor is filled by a dielectric and it is charged and then battery is removed. Now dielectric slab is slowly drawn out of the capacitor parallel to the plates. The variation of the potential of capacitor with respect to the length of the dielectric plate drawn out [...]
A parallel plate capacitor has plates of area A and separation d and is charged to potential difference V. The charging battery is then disconnected and the plates are pulled apart to double the initial separation. The work required to separate the plates is
30
Nov
A parallel plate capacitor has plates of area A and separation d and is charged to potential difference V. The charging battery is then disconnected and the plates are pulled apart to double the initial separation. The work required to separate the plates is Minimum number of capacitors of 4μF capacitance each required to obtain [...]
Two capacities of capacitance C1 = 3uF and C2 = 6uF arranged in series are connected to parallel to a third capacitor C3 = 4uF. This arrangement is then connected to a battery e.m.f. = 30 V as shown. The energy lost by the battery in charging the capacitors.
30
Nov
Two capacities of capacitance C1 = 3uF and C2 = 6uF arranged in series are connected to parallel to a third capacitor C3 = 4uF. This arrangement is then connected to a battery e.m.f. = 30 V as shown. The energy lost by the battery in charging the capacitors. Minimum number of capacitors of 4μF [...]
A parallel plate capacitor of capacitance C is having charge q0 on each plate. Now it is connected to a battery of emf V. (A) The battery supplies charges +CV and −CV to two plates (B) The outer surface of the plates have equal charges q0 (c) The facing surface have equal and opposite charges of magnitude CV
30
Nov
A parallel plate capacitor of capacitance C is having charge q0 on each plate. Now it is connected to a battery of emf V. (A) The battery supplies charges +CV and −CV to two plates (B) The outer surface of the plates have equal charges q0 (c) The facing surface have equal and opposite charges [...]
The separation between the plates of a parallel plate capacitor is made three times while it remains connected to a battery (A) the battery absorbs some energy (B) the electric field between plates remains same (c) the charge on the capacitor decrease by 66.7% (D) some work has to be done by an external agent on the plates
30
Nov
The separation between the plates of a parallel plate capacitor is made three times while it remains connected to a battery (A) the battery absorbs some energy (B) the electric field between plates remains same (c) the charge on the capacitor decrease by 66.7% (D) some work has to be done by an external agent [...]
The capacitance of a parallel plate capacitor is C0 when the space between the plate is vacuum. Now this space is filled by a slab of dielectric constant K. The capacitor is connected to a battery emf V and the slab is taken out. (A) Charge (K1)C0V flow through the battery (B) Energy (K−1)C0V^2 is absorbed by the cell (c) The external agent has to do 1/2(K−1)C0V^2 amount of work to take the slab out (D) the heat produced in connecting wires is 1/2(K−1)C0V^2
30
Nov
The capacitance of a parallel plate capacitor is C0 when the space between the plate is vacuum. Now this space is filled by a slab of dielectric constant K. The capacitor is connected to a battery emf V and the slab is taken out. (A) Charge (K1)C0V flow through the battery (B) Energy (K−1)C0V^2 is [...]
A parallel plate capacitor is connected to a cell. A metal plate of negligible thickness is inserted parallel to plates. (A) the capacitance remains same (B) the cell will supply more charge (c) Equal and opposite charges will appear pm two faces of metal plate (D) the potential difference between the plates will increase
30
Nov
A parallel plate capacitor is connected to a cell. A metal plate of negligible thickness is inserted parallel to plates. (A) the capacitance remains same (B) the cell will supply more charge (c) Equal and opposite charges will appear pm two faces of metal plate (D) the potential difference between the plates will increase Minimum [...]
A battery is used to charge a parallel plate capacitor till the potential difference between the plates becomes equal to the electromotive force of the battery. The ratio of the energy stored in the capacitor and the work done by the battery will be
30
Nov
A battery is used to charge a parallel plate capacitor till the potential difference between the plates becomes equal to the electromotive force of the battery. The ratio of the energy stored in the capacitor and the work done by the battery will be Minimum number of capacitors of 4μF capacitance each required to obtain [...]
1000 small water drops each of radius r and charge q coalesce together to form one spherical drop. (A) the ratio of capacitances of big and small drop is 10 (B) the ratio of potential of big and small drop is 100 (c) the ratio of surface charge densities of big and small drop is 10 (D) the ratio of energy stored of big and small drop is 10^5
30
Nov
1000 small water drops each of radius r and charge q coalesce together to form one spherical drop. (A) the ratio of capacitances of big and small drop is 10 (B) the ratio of potential of big and small drop is 100 (c) the ratio of surface charge densities of big and small drop is [...]