Physics question and answers for February 07, 2024
- Q A dipole of dipole moment P 21 3j 4k is placed at point A 2 3 1 The electric potential due this dipole at the point B 4 1 0...
- Q A copper rod moves with a constant angular velocity w about a long straight wire carrying a current I If the ends of the rod from the wire are at...
- Q 44 A cloud is at potential of 8x10 V re ground A charge of 40C is transferred in a lighting stroke between the cloud and the earth The energy released...
- Q 52 A B C are three points on a circle of radius 1 These points form the corners of an equilateral triangle A charge 2C is placed at the centre...
- Q A hollow metal sphere of radius Sem is charged such that the potential on its surface is 10V The potential at the centre of the sphere is 1 0 V...
- Q 3 An infinite number of charges each equal to q are placed along the X axis at x 1 x 2 x 4 x 8 The potential at the point...
- Q 5 Some equipotential surfaces are shown in the figure The magnitude and direction of the electric field is 0 10 20 V 20 30 V 30 40 V 0 30...
- Q Charge 6 12 and 24 nano coulomb are placed on the corners of a square of side 10 2 cm The charge that must be placed at the fourth corner...
- Q 3 10 V m 42 The p d between two plates separated by a distance of 1 mm is 100 V The force on an electron placed in between the...
- Q Two concentric shells have radii R and 2R charges q4 and q and potentials 2V and 3 2 V respectively if potential at infinity is zero Now shell B is...
- Q 37 Two like charges in the ratio 1 4 are 30cm apart The resultant field strength vanishes at distance from the smaller charge 1 20cm 3 5cm 8 If an...
- Q When the rms voltages VL Vc and VR are measured respectively across the inductor L the capacitor C and the resistor R in a series LCR circuit connected to an...
- Q 3 4 5 1023 V 4 45 1 16 A spark is produced between two insulated surfaces maintained at a potential difference of 5x10 volt If the energy output is...
- Q an oscillating LC circuit the maximum charge on the capacitor is Q The charge on the capacitor when the energy is stored equally between the electric and magnetic id is...
- Q 50 The potential difference between two parallel plates is 10 volt If the plates are separated by 0 5 cm the force on an electron between the plates is 1...
- Q In potentiometer a balance point is obtained when 1 The e m f of the battery becomes equal to the e m f of the experimental cell 2 The p...
- Q Two fixed equal positive charges each q are located at point A B separated by a distance of 6 m A particle of mass m having equal and opposite charge...
- Q A test charge q is moved without acceleration from A to C along the path from A to B and then from B to C in electric field E as...
- Q An electric dipole is held in a uniform electric field i Using suitable diagram show that it does not undergo any translatory acceleration and ii Derive an expression for torque...
- Q A galvanometer 1 0 1 A R 60 is converted to an ammeter of range 10 1 A by the help of shunt S Same galvanometer is converted in to...
- Q 0 Q Work done by external agent in carrying an electron from point O to O is 5 2 2 2 5 2 2 1 3 4ekQ a re placed...
- Q 3 40 Hz 4 50 Hz 41 Electric potential in a region is given by V 6x 8xy 8y 6yz 4z The magnitude of electric force acting on a 2C...
- Q Som 24 An inclined plane makes an angle of 30 with the horizontal electric field E of 100 V m A particle of mass 1 kg and charge 0 01...
- Q The electric potential at a point due to electric dipole will be max and minimum when angles between the axis of dipole and line joining the point to the dipole...
- Q Three point charges of 1 C 2 C and 3 C are placed at the corners of an equilaterals triangle of side 1 m What is work required to move...
- Q An assembly of charges q 9 9 9 m 8 m respectively from origin The electric potential due to these charges at origin is 60 60 40 www q 2780
- Q An oil drop carrying charge of 2 electrons has mass 3 2 x 10 17 kg It falls freely in air with terminal velocity The electric field required to make...
- Q 9 Which of the following statements is incorrect regarding the electric 1 There is tension in every line and it tries to pull its ends together There is attraction between...
- Q In the figure shown A and C are concentric conducting spherical shells of radius a and c respectively A is surrounded by a concentric dielectric medium of inner radius a...
- Q 18 An electric dipole of length 1 cm is placed with the axis making an angle of 30 to an electric field of strength 10 NC If it experiences a...
- Q 3 Three identical charge Q are fixed at each corner of a equilateral triangle What should be the minimum velocity given to charged particle q placed at the centre of...
- Q Q80 In the study of transistor as amplifier if a and where I I and I are the collector IE IB base and emitter currents then 2000 a b B...
- Q Q 13 75 A small dipole is placed on the axis of a circular ring with its dipole moment vector pointing along the axis away from the centre of the...
- Q PART E V Answer ANY TWO of the following questions 2x5 10 k Two point charges 2 nC and 3 nC are placed at two corners of an equilateral triangle...
- Q s The acceleration of an electron due to the mutu between the electron and a proton when they are l IS m 9x 10 kg e 1 6 10 C...
- Q Q 14 75 A massless non conducting rod of length L lies along the X axis with its centre at the origin The two ends of the rod carry point...
- Q Q 5 75 A non conducting sphere of radius R is charged such that the region R 2 r denotes the distance from the centre of the sphere has uniform...
- Q Q7 A uniformly charged conducting sphere of 2 4 m diameter has surface charge density of 80 C m 1 Find the charge on the sphere 2 What is the...
- Q Q 23 75 Two particles carrying charge Q each are fixed at the points 4 0 and 40 A third particle of mass m and carrying charge Q is released...
- Q The work done in moving a charge 3 C from B to A is Take 1 4 10 Nm C 5 C A 1 2 Question Type Single Correct Type...
- Q ucting plates Q 20 75 Two large no are fixed parallel to each other with a very small distance between them The plates are charged uniformly with charge per unit...
- Q Q 19 75 Consider a hemispherical surface with its centre at the origin and its circular base entirely in the X Y plane A uniform electric field exists Then the...
- Q 5 Two charges 1 C and 4 uC are separa 12m Where should a unit charge be placed along the line joining the two changes so that the resultant force...
- Q field E a particle carrying charge 0 002 C is taken from the origin O to the point 10 along a straight line path Then the particle is taken from...
- Q 5 Let E 2xyi xj be the electric field distribution in the space All are in SI units Then which of the following options is are correct k constant A...
- Q Three concentric metal shells of radius a 2a and 3a are given charges Q Q and Q respectively If total electrostatic poten KQ energy of this charge distribution is 2a...
- Q Q 18 75 Two thin conducting spherical shells of radius Rand 2R are fixed concentrically and given total charge Q and respectively Let r denote the distance from their common...
- Q 2 26 Define the term electric dipole moment and derive the expression for electric field intensity due to dipole on its equatorial position 3 OR
- Q An electron is fired parallel to uniform electric and uniform magnetic field acting simultaneously and in the same direction The electron 1 Moves along a circular path 2 Moves along...
- Q Q11 75 A small electric dipole with dipole moment p is fixed at the origin with its dipole moment vector pointing in the X direction The electric field due to...
- Q Q 6 75 Two infinitely long wires are fixed in the X Y plane along the lines x a and X a The wires are charged uniformly with charge per...
- Q Q8 75 A very long insulating cylinder of radius R is charged uniformly with charge per unit volume P Let E T denote the magnitude of electric field at any...
- Q 15 The electric potential in a certain region of space along X axis varies as Vx 3x 5 where x is in meter and V in volts The electric field...
- Q Two point charges q and 2q are placed at a certain distance apart Where should a third point charge be placed so that it is in equilibrium 1 on the...
- Q X PHYSICS 12 Two identical metal spheres possess 60C and 20C of charges They are brought in contact and then separated by 10 cm The force between them is 1...
- Q In finding the electric field using Gauss Law the formula T Al is applicable In the formula is permittivity of free space A is the area of Gaussian surface and...
- Q If the magnitude of intensity of electric field at a distance x on axial line and at a distance y on equatorial line a given dipole are equal then x...
- Q A point charge Q of negligible dimension is kept near not touching any face the corner A of a cube having faces of negligible thickness as shown in the figure...
- Q Q18 The electric field in a certain region of space is 5 4 4k 10 N C Calculate the electric flux due to this field over an area of 2...
- Q 9 An electric dipole having point charges qand separated by a fixed distance d is kept under the in of a uniform electric field E such that the axis of...
- Q R AI DUAL CAMERA Eo Uncharged e A iii Two concentric conducting shells a Inner sphere is given charge Q and outer is uncharged 1 of p K d Su...
- Q Q1 Two identical conducting spheres A and B carry equal charge They are separated by a distance much larger than their diameter and the force between them is F A...
- Q Answer A B C Your Attempt Correct answer the magnetic field at a point on axis is zero the electric field on axis of cylinder is zero The magnetic field...
- Q Q13 The given graph shows variation with distance r from centre of 11 Jan 2019 To To a Electric field of a uniformly charged sphere b Potential of a uniformly...
- Q 10 Ten charges are placed on the circumference of a circle of radius R with constant angular separation between successive charges Alternate charges 1 3 5 7 9 have charge...
- Q Q7 For a uniformly charged ring of radius R the electric field on its axis has the largest magnitude at a distance h from its centre Then value of h...
- Q Which one of the following grap variation of electric field with distance r from centre of a charged spherical conductor of r R 1 E 2 E M 3 E...
- Q The flux linked with a circuit is given by 31 7 The graph between time x axis and induced emf y axis will be A straight line O Circle O...
- Q Two identical metal balls are in a weakly conducting medium of conductivity o at large separation We connect a battery between the two objects to charge them upto potential difference...
- Q WH in figure in which two Consider situation isolated conducting spheres are connected Initial K is open and K is closed Charge on sphere of radius a is Q Now...
- Q charges 20 10 cm apart If N is number of electric field line leaving 20 C charge and N is number of electric field line entering 15 C charge then...
- Q A neutral conductor kept in uniform external electric field E and a point charge q is placed inside the conductor not at centre If net force on q is F...
- Q Consider the point charges 5 nC and 3 nC are located at 4 0 2 and 5 0 3 respectively The net electric field intensity at point 7 3 1...
- Q An extremely long wire is uniformly charged An electron is revolving about the wire in circle of radius The speed of electron is proportional tor Here n DA1 OB 2...
- Q Two point charges 2 C and 2 uC are being located at points 0 0 1 and 0 0 1 respectively The net electric potential at point P 3 0...
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