Physics question and answers for January 08, 2024
- Q 1 60 F 2 30 F In the given network equivalent capacitance is 3 F is C 2 F AHHH 6 F 1pF 2uF 3 10 F 4 5 F...
- Q 55 The radius of the internal cylinder of a cylindrical air capacitor is r 1 5 cm and that of the external cylinder r 3 5 cm A potential difference...
- Q In Illustration 18 find the effective capacitance between P and V Solution Po If a battery be connected across the terminals P and V from symmetry V Vw and V...
- Q In the circuit diagram shown all the capacitors are in uF The equivalent capacitance between points A B is in F 6 AO 1 14 5 8 3 HH 10...
- Q Example 81 Figure 2 123 shows two identical capacitors C and C each of 1 F capacitance connected to a battery of 6V Initially switch S is closed After some...
- Q In the following between A B is 1uF Find the value of 3 Just now 1 Ao t Bo 23 32 S F D 2 F C 1 F HK...
- Q In the given circuit find potential at poin 1 3 4V 11 9V 11 V c 1 3V 2 11 4 None of these
- Q In the circuit shown switch is connected to position 1 for a very long time What is maximum current through inductor when switch is taken to position 2 6V 1202...
- Q The distance between the plates of a parallel plate capacitor is 0 05 m A field of 3 x 104 V m is established between the plates It is disconnected...
- Q 12 In the given circuit the charge on the plates of 1 uF capacitor when 100 V battery is connected to the terminals A and B will be AF 1...
- Q A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V Another capacitor of capacitance 2C is connected to another battery...
- Q A thin metal plate P is inserted between the plates of parallel plate capacitor of capacitance C in such a way tha its edges touch the two plates The capacitance...
- Q Choose the incorrect statement if the given network is in steady state A The P D across all capacitor equal 10V B The P D across all resistance equals zero...
- Q For the circuit shown here the potential difference between points A and B is A 2 5 V B 7 5 V 6C ec3cc2c 10V to 2002 ww C 10...
- Q 26 Find the equivalent capacitances of the combinations shown in figure 31 E15 between the indicated points 1 F F 4 F 3 F 12 2 F HH H 4...
- Q 10 The minimum potential energy required to cause a spark is 10 mJ Assume that the capacita of the central part relative to ground is nearly 36 pF Calculate the...
- Q 7 The capacitance of a parallel plate capacitor with air as medium is 6 F With the introduction of a dielectric medium the capacitance becomes 30 F The permittivity of...
- Q A capacitor is half filled with a dielectric K 2 as shown in figure A If the same capacitor is to be filled with same dielectric as shown what would...
- Q 8 Three capacitors of capacitances 2 pF 3 pF and 4 pF are connected in paralle a Write the SI unit of capacitance 1 b Calculate the effective capacitance of...
- Q Find the equivalent capacitance of the infinite ladder shown in figure between the points A B 2 F HH Aa 2 F HH 2 F HH 2 F HH 2...
- Q 14 It is required to construct a 10 F capacitor which can be connected across a 200 V battery Capacitors of capacitance 10 uF are available but they can withstand...
- Q 6 Find the equivalent capacitances of the combinations shown in figure 31 E15 between the indicated points 1 F 31 4 F 3 F 2 F 36 H 4 F...
- Q Find the total energy stored in the capacitors in the network shown below CBSE D 04 Ans 3 6x10 5 J 6V 1 F 2 F 1 1 F HH...
- Q What charges will flow through section B of the circuit in the direction shown when switch S is closed A 30 V 60 V B S 2 F 3 F
- Q 21 The particle P shown in figure 31 E11 has a mass of 10 mg and a charge of 0 01 C Each plate has a surface area 100 cm...
- Q 4 A capacitor with plate separation d is charged to V volts The battery is disconnected and a dielectric slab of thickness and dielectric d 2 constant 2 is inserted...
- Q 8 For the circuit arrangement showil ifl C 20 F www 60 S2 30 Q www 20 32 www 30 S2 www 10 Q T K 12 V C 10...
- Q 32 What will be the direction of charge flow when th switch S is closed 2C H 4C C 11 From a to b a b S E C HH...
- Q Q 20 Find the equivalent capacitance across A B B F A uf C 15 F D none 12p 23uF HH 10 F 7 F 13 F luF HH 1pF
- Q Each of the capacitors shown in figure 31 E6 capacitance of 2 F Find the equivalent capacitance of the assembly between the points A and B Suppose a battery of...
- Q A parallel plate capacitor with plate separation 5 mm is charged by a battery It is found that on introducing a mica sheet 2 mm thick while keeping the battery...
- Q Only switch S closed in figure S 3 F 1022 www S 302 V 692 www S HH 20 V 2 F 20 2 wwww a What is the steady...
- Q A parallel plate air capacitor consists of two plates each of area 0 01 sq m separated by a distance of 0 1 mm It is charged to a potential...
- Q Five capacitors each of capacitance C and breakdown voltage Vare connected as shown in the figure The capacitance and breakdown voltage of the combination applied across AB will be C...
- Q Q 21 Find equivalent capacitance across AB all capacitances in F A B 9 F C 48 F D None A 17 13 S 10
- Q Two identical uniform discs roll without slipping on two different surfaces AB and CD see figure starting at A and C with linear speeds u and U respectively and always...
- Q A charged capacitor has energy U 2 x 104 J and Co 4 x 10 8 F in the absence of a dielectric When the potential difference is kept constant...
- Q A parallel plate capacitor has a capacity of 2uF A dielectric salt of constant K 5 is inserted between the plates and the capacitor is charged to 100V and then...
- Q Example 54 Seven capacitors each of capacitance 2 uF are to be connected in a configuration to obtain an effective capacitance of 10 11 uF Suggest a suitable combination to...
- Q In the given circuit the switch S was initially open If the switch is closed now then amount of charge flown through the switch S is 1 15 C 2...
- Q Two conducting spheres of radii a and b are separated by a large distance The capacity of this system between points A and B is B 4 a b A...
- Q In the circuit shown all capacitors are identical Initially the switch is open and capacitor C is the only charged capacitor After the switch is closed the equilibrium is re...
- Q In the given diagram the capacitors are initially uncharged and now are connected with switch S open Find the potential of point b and the amount of charge flowing through...
- Q 35 As in the figure if a capacitor of capacitance C is charged by connecting it with resistance R then energy given by the battery will be 1 CV 1...
- Q In the circuit shown find the potential difference between points A and B in V 10 F 1002 100V 1002 M 5 F 1092 m 1052 B 1052
- Q For the circuit shown in figure which of the following statement is true A with S closed V 15 V V 20 V B with S3 closed V V 25...
- Q 10 V A H 2 uF 1 7 5 V 2 15 V 3 5 V of B point in given circuit 5 V www 2 F C
- Q Across a capacitor C 10 uF the voltage is changing at a rate of 200 volt second The displacement current in the capacitor is 1 20 mA Id Eo 2...
- Q Illustration 6 In the circuit shown in the figure if the point B is earthed find the potential of point C
- Q given circuit ratio of charge on 2 F capacitor to the charge on 3 uF capacitor will be 1 F 2 F A 3 F HH 1 2 3 9...
- Q The capacitor 2C is charged to potential difference Vo while the capacitor C is uncharged at t 0 At this instant the switch S is closed A Charge on the...
- Q diagram shows two capacitors with capacitance and breakdown voltages as mentioned What should be the maximum value of the external emf source such that no capacitor undergoes breaks down 3C...
- Q Illustration 3 Find capacitance of a conducting sphere of radius R
- Q A capacitor is charged with a battery and energ stored is U After disconnecting the battery anothe capacitor of same capacity is connected in parall with it The energy stored...
- Q A parallel plate capacitor of 6 F is connected across 18 V battery and charged The battery is then disconnected and oil of dielectric constant k 2 1 is introduced...
- Q The two parallel plates of a condenser have been connected to a battery of 300 V and the charge collected at each plate is 1 uC The energy supplied by...
- Q 6 Three capacitors each of capacitance 0 3 F are connected in parallel This combination is connected with another capacitor of capacitance 0 1 F in series What is the...
- Q 4 The energy required to charge a capacitor of 5 F to 20KV is in kJ
- Q 23 The ratio of modulus of rigidity to bulk modulus for a Poisson s ratio of 0 15 would be 1 1 4 2 21 23 3 25 6 4...
- Q 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 A 4 F 1...
- Q Figure given below shows two identical parallel plate capacitors connected to a battery with switch S closed The switch is now opened and the free space between the plate of...
- Q 3 What charges will flow after the shorting of the switch S in the circuit given in the figure through sections A and B E C2 A C B
- Q An artificial radioactive battery consists of No number of atoms of a radioactive element emitting a particles with a disintegration constant 1 per sec Half of the fraction of x...
- Q To establish an instantaneous displacement cur of ampere in the space between the plates of a 1 dV parallel plate capacitor of farad the value of dt is 2 1...
- Q Charge Q 2Q 3Q 4Q are given to four large parallel conducting plates A B C D respectively B and C are connected to each other by a metallic wire...
- Q The minimum number of 2uF identical capacitors which can withstand a maximum potential difference of 400 V require to design a circuit of effective capacitance of 2uF and bearing voltage...
- Q A parallel plate capacitor has semi circular plates of radius R and spacing d If the dielectric slab of relative permittivity is rotated through an angle o find the torque...
- Q 28 In the given circuit diagram the potential difference across 12 F capacitor is 1 2 V 3 6 V 2 F HH HH 6 F HH 3 F 12...
- Q 1 ch plate is A and separation Area of between consecutive plates is d Emf of the battery connected is V The charge on plate 2 is A Id A...
- Q In the circuit shown when the switch is closed the capacitor is charged with time constant 7 and when switch is open then capacitor discharge with time constant T then...
- Q In an oscillating LC circuit the maximum charge on the capacitor is Q The charge on the capacito when the energy is stored equally between the electric and magnetic fields...
- Q 0 Find the final stored energy in the capacitor 12 www HH 5 F F 2 5V 192 ww R 252 ww 0 59 ww 90 IR C
- Q 0 0 A capacitor of capacitance Co is charged to a potential V and then isolated A small capacitor C is then charged from Co discharged and charged again the...
- Q spherical capacitor half space is completely filled with a liquid dielectric Find the 1b 28 Fig 4 80 a capacitance b ratio of charge densities in the regions 1 and...
- Q 28 A portion of electrical network is as shown in figure The energy stored in the capacitor is 11A 1 12 J 2A M 19 202 2uFT 592 22 12...
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