Physics question and answers for January 12, 2024
- Q In the circuit shown in figure C 1 F and C 2 F Capacitor C is charged to 100 V and C2 is charged to 20 V After charging they...
- Q Two identical parallel plate capacitors 1 and 2 are placed vertically and connected in series to a battery In capacitor 2 there is a charged small particle attache by a...
- Q 28 One plate of a capacitor is connected to a spring as shown in figure Area of both the plates is A In steady state separation between the plates 0...
- Q In a parallel plate capacitor the separation between the plates is 3mm with air between them Now a 1mm thick layer of a material of dielectric constant 2 is introduced...
- Q The metallic plates of same areas shown in figure with their charges Q 5Q 10Q A B C The final charges on inner and outer surfaces of plate Care respectively...
- Q In the circuit shown in the figure C C C and capacitor C is having initial charge Q The switch is closed at t 0 Which of the following options...
- Q Three identical metal plates of area S are at equal distances b as shown Initially metal plate A is uncharged while metal plates B and C have respective charges Q...
- Q Current through the battery in the circuit shown in the figure A immediately after the switch S is closed is e R B immediately after the switch S is closed...
- Q 5 12 te The particles P shown in figure has a mass of 10 mg and a charge of 0 01 surface area 100 cm on one side What potential...
- Q 20 180 A combination of parallel plate capacitors is maintained at a certain potential difference when a 3 mm thick slab is introduced between all the plates then to maintain...
- Q The circuit shown in the diagram is in steady state with the switch open When th switch is closed which of the following will not change immediately 3 R mmmmm...
- Q A cylindrical capacitor has two co axial cylinders of length 20 cm and radii 2r and r Inner cylinder is given a charge 10 C and outer cylinder a charge...
- Q 31 Two identical capacitors 1 and 2 are connected in series to a battery as shown in figure Capacitor 2 contains a dielectric slab of dielectric constant K as shown...
- Q If V denotes the potential difference across the plates of a capacitor of capacitance C the dimensions of CV are This question includes concepts from 12th syllabus 1 Not expressible...
- Q 5 Three conducting spheres A B and C are as shown in figure The radii of the spheres are a b and c respectively A and B are connected by...
- Q 37 The ratio between the energy stored in 5 F capacitor to the 4uF capacitor in the given circuit is a 1 2 c 1 25 552 ww Q 4...
- Q A parallel plate capacitor with a dielectric slab of dielectric constant 3 filling the space between the plates is charged to a potential V The battery is then disconnected and...
- Q 81 A capacitor of capacity 6 F and initial charge 160 C is connected with a key S and different resistors as shown in figure Point M is earthed If...
- Q 27 A charged capacitor of capacitance C is discharging through a resistor of resistance R At what time the charge on the capacitor is equal to one half of its...
- Q 26 When a capacitor is fully charged as shown in the following figure then current drawn from the cell is 7kQ 4 KQ a 1 mA 10 V 8 k...
- Q The area of the positive plate is 125 cm and the area of the negative plate is 100 cm They are parallel to each other and are separated by 0...
- Q to V volts The battery is disconnected and a d dielectric slab of thickness and dielectric constant 2 is inserted between the plates The potential difference across its terminals
- Q 42 In the circuit shown in figure the charge stored in 2 F capacitor on applying a potential difference of 60 V between A and B is 19 3 A...
- Q Two thin dielectric slabs of dielectric constants K and K K K are inserted between plates of a parallel plate capacitor as shown in the figure The variation of electric...
- Q A parallel plate capacitor is charged from a battery and then isolated from it Now a dielectric slab of dielectric constant K is introduced in the region between plates filling...
- Q 3 Consider the capacitor circuit shown in the figure initially switch K is closed and after sufficiently long time K is also closed The charge flowing through section 1 2...
- Q 2 4 In order to establish an instantaneous displacement current of 1 mA in the space between the plates of 2 F parallel plate capacitor the rate of change of...
- Q d The charge on a parallel plate capacitor varies as q cos2rut The plates are very large and close together area A separation d The displacement current through the capacitor...
- Q c 4 2n sinut d qonu sinnut 4A parallel plate capacitor with plate area A and separation between the plates d is charged by a constant current I Consider a...
- Q A parallel plate capacitor of capacitance C is charged with battery of emf V volts The force between the plates is given by F The battery is disconnected Now a...
- Q 71 Two capacitors 2C and 4C initially charged to potential difference of Vo and 3V with the polarities as shown are connected to an inductor of inductance L Initial current...
- Q Six metallic plates each with a surface area of one side A are placed at a distance d from each other The alternate plates are connected to points P and...
- Q A4 F capacitor is given 20 Ccharge and is connected with an uncharged capacitor of capacitance 2 F as shown in figure When switch Sis closed 4 F 2 F...
- Q 18 Four identical plates each of area A placed at equal distance d Find potential energy stored in the space between plate 1 and 2 1 3 2 9 d...
- Q 5 Three large plates are arranged as shown How much charge will flow through the key k if it is closed
- Q d None 33 When an ac voltage of 220 V is applied to the 40 A c capacitor C then a the maximum voltage between plates is 220 V b...
- Q A capacitance of 10 uF is charged to a potential of 50V with a battery The battery is now disconnected and an additional charge 200 C is given to positive...
- Q 7 The plates of a parallel plate capacitor are given charges 4Q and 20 The capacitor is then conneced acros an uncharged capacitor of same capacitance as first one C...
- Q Two identical parallel plate capacitors are placed in series and connected to a constant voltage source of Vo volt If one of the capacitors is completely immersed in a liquid...
- Q a Using Bohr s postulates derive the expression for the total energy of the electron in the stationary states of the hydrogen atom b Using Rydberg formula calculate the wavelengths...
- Q 26 Ifa capacitor of 8 F is connected to a 220 V 100 Hz ac source and the current passing through it is 65 mA then the rms voltage across...
- Q Space between plates of a parallel plate capacitor is filled with three dielectric slabs as shown Equivalent dielectric constant for the arrangement shown between points X and Y is A...
- Q A parallel plate capacitor of capacity Co is charged by a battery After charging battery is disconnected and a dielectric is filled between the plates of capacitem Column I represents...
- Q The two plates of a parallel plate capacitor each having area A 400cm are given charges 7 7 C and 1 1 C then the force exerted per unit area...
- Q In the circuit diagram shown all the capacitors are in F The equivalent capacitance between points A B is in F A 14 5 B 7 5 Ao 6 HH...
- Q Three capacitors each of 4 F are to be connected in series and parallel in such a way that the effective capacitance is 6 F If P number of capacitors...
- Q If a 90 W bulb 90 W dissipates when connected across 120 V is connected across a 220 V potential difference as is used in Europe how much power does...
- Q PARA QUES The circuit shown is placed in vacuum Both the capacitor are identical and they have the same capacitance C Light is incident on the left plate of the...
- Q Question 7 Which statements is are corect 10 F C 700 wwwwww S 80 F 5V 300 www P C S 30 F C Q 300 10V www 1000 BBYJU...
- Q The capacitances are C 0 5 F and C 1 5 F and both capacitors are charged to a potential difference of V 200 V but with opposite polarity as...
- Q Two conductors of infinite length carry a current i each which varies with time according relation i ine They are parallel and separated by a distance 2a A circular conducting...
- Q D The equivalent capacitance between A and B for the combination of Fig 4 82 is 4 F i Calculate the capacitance of the capacitor C ii Calculate the charges...
- Q 22 A 10 F capacitor is charged by a 30 V dc supply and then connected across an uncharged 50 F capacitor Calculate a the final potential difference across the...
- Q The AB and CD are two 20 space between AB and CD contains dielectric material of dielectric constant K K and K3 as shown where K 1 K 2 K3...
- Q Four identical plates of area A and separation d are connected as shown in diagram Each plates of capacitor are in horizontal plane and P Q and R are three...
- Q Half of the space between a parallel plate capacitor is filled with a medium of dielectric constant K parallel to the plates If initially the capacity was C then the...
- Q A series combination of two capacitances of value 0 1 F and 1 F is connected with a source of voltage 500 volts The potential difference in volts across the...
- Q Five identical capacitor plates are arranged such that they make capacitors each of 2uF The plates are connected to a source of emf 10 V The charge on plate Cis...
- Q B A Zero C 2r Five conducting large parallel plates each of area A are arrange as shown then find correct statement B Total charge on Hol r A Total...
- Q In the circuit shown in figure charge stored in the capacitor of capacity 5 ufis A 60 C C 30 C 2uf 2uf 2uf 2uf 5uf 3uf 4uf 3 f...
- Q An arrangement of five identical capacitors is shown in given circuit the potential at X and Y are respectively 30 V C C C 12 V and 6 V C...
- Q A parallel plate capacitor of capacitance 5 F and plate separation 6 cm is connected to a 1 V battery and charged A dielectric of dielectric constant 4 and thickness...
- Q The two plates of an ideal capacitor of capacitance C are given charges Q and Q2 as shown in the circuit below This capacitor is connected across a resistance R...
- Q 9 Between two thin parallel metal plates having charges q and q is inserted a thick metal slab having charge q so that distance between the upper plate and top...
- Q The capacity of a parallel plate condenser is 5uF When a glass plate is placed between the plates of the conductor its new capacitance becomes 50 F of the original...
- Q A capacitor consists of two air spaced concentric cylinders The outer of radius b is fixed and the inner is of radius a If breakdown of air occurs at field...
- Q In a parallel plate capacitor the distance between the plates is 10 cm Two dielectric slabs of thickness 5 cm each and dielectric constant K 2 and K 4 respectively...
- Q If a slab of insulating material 4 x 103 m thick is introduced between the plates of a parallel plate capacitor the separation between plates has to be increased by...
- Q A 7 5 F capacitor that is initially uncharged is connected in series with a 1 4 MQ resistor and an emf source with 18 V with negligible internal resistance...
- Q For the capacitor network shown in the figure below the potential difference across ab is V40 V The capacitors have values C 6 nF and C 22 nF C C...
- Q A parallel plate capacitor has plates of are A separated by distance d between them It i filled with a dielectric which has a dielectri constant that varies as k...
- Q An infinite number of point charges each carrying 14C charge are placed along the y axis at y 1 m 2 m 4 m 8 m The total force on...
- Q A parallel plate capacitor whose capacitance C is 14pF is charged by a battery to a potential difference methongo V 12 V between its plates The charging battery is now...
- Q 4 Initially the capacitor is charged to a potential of 5 V and then connected to position 1 with the shown polarity for 1 s After 1 s it is...
- Q For changing the capacitance of a given parallel plate capacitor a dielectric material of dielectric constant K is used which has the same area as the plates of the capacitor...
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