Physics question and answers for January 28, 2024
- Q 16 Displacement current is same as 1 conduction current due to flow of free electron 2 conduction current due to flow of positive ions 3 conduction current due to flow...
- Q 7 Two point charges Q are kept fixed on XY plane at points A 0 d and B 0 d Another point charge q with mass m is held at...
- Q A non conducting solid sphere of radius 30 cm and relative permittivity 1 has the volume charge r 5 C m 1 3 where r in cm is the radial...
- Q A solid sphere of radius 4R is charged with volume charge density as p r kra here k and a are positive constant r is the distance from the centre...
- Q Consider a point charge q The equi potential surface whose potentials differ by a constant amou say 1 0 volt are A equally spaced B unequally spaced separation increasing one...
- Q 219 Charge Q is uniformly distributed on a dielectric rod AB of length 21 The potential at P shown in the figure is equal to Q A a c Q...
- Q When a negative charge is released and moves in electric field it moves towards a position of A lower electric potential and lower potential energy B lower electric potential and...
- Q 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 Electric field is zero...
- Q Pre Med 02 For a uniformly charged sphere the electric field from its centre 1 increases linearly upto the surface 2 decreases linearly upto the surface 3 remains zero upto...
- Q A dipole having dipole moment p is place at the axis of a charged ring having charge Q and radius R at a distance x from the center as shown...
- Q Two charges q and 2q are placed at heights a 2 and a respectively from plane of the square surface ABCD Then flux through the square surface is 1 2...
- Q Mark the correct statement 1 Displacement current is produced only by varying magnetic field 2 Displacement current is produced by varying electric field only 3 Displacement current is produced by...
- Q An electric dipole is fixed along y axis with its centre at origin At a given instant a charge particle is moving along x axis then q m O V...
- Q An electron is projected from a distance d and with initial velocity u parallel to a uniformly charged flat conducting plate as shown It strikes the plate after travelling a...
- Q Plane x 2y 10 carries uniform surface charge density 3 nc m Resulting electric o T field at a point near to the plane makes an angle 0 with x...
- Q The electric potential V at any point x y z in meters in a space is given by V 10x volt The magnitude of electric field at the point 1...
- Q 1 If N is number density of acceptor atoms added and N is number density of donor atoms added to a semiconductor n and n are the number density of...
- Q The velocity of a particle m 10 mg q 4 0 C at t 0 is 20 m s in the positive x direction If the particle moves in a...
- Q Two non conducting solid spheres of radii Rand 2R having uniform volume charge densities p and P2 P1 respectively touch each other The net electric field at a distance 2R...
- Q 9 A thin spherical shell of radius R carries uniform surface charge density o It is cut into two parts by a plane from centre as shown To hold two...
- Q 78 A thin metallic spherical shell contains a charge Q over it A point charge q is placed inside the shell at point T separated from the centre by distance...
- Q D A charged particle of mass m 1 kg and charge q 2 C is thrown from a horizontal ground at an angle 0 45 with speed 25 m s...
- Q Choose the Correct Answer Q1 Two long thin rods with linear charge densities A1 6 5 nC m and A2 3 5 nC m lie parallel to each other and...
- Q 0 Two infinite planes each with uniform surface charge density are kept in such a way that the angle between them is 30 The electric field in the region shown...
- Q For an electric dipole Piat origin find the value of tand at point A 3 4 Here S is the angle made by resulting electric field at point A with...
- Q making 90 with CB and 30 with AC when produced ABC is a right angled triangle the right angle being at point B Charges of 10 24 11 52 3...
- Q I wo large vertical and parallel metal plates having a separation of 1 cm are connected to a DC voltage source of potential difference X A proton is released at...
- Q wo charged spheres are kept at a finite centre to centre spacing as hown in the figure The force of electrostatic interaction between them first calculated assuming them point like...
- Q The graph shows the electric potential as a function of x in a certain region What is the x component of the electric field in this region if V 50...
- Q 3 Consider a current carrying wire AB placed on a smooth inclined plane as shown A steady current of 1 Aa being maintained in the wire At t 0 inclined...
- Q Two small non conducting spherical objects each of mass 5 kg carry the same amount of identical charges uniformly distributed over them If the electrostatic force between the two objects...
- Q A small block having charge Q placed on a frictionless horizontal table is attached to one end of a spring of force constant k The other end of the spring...
- Q A small ball of mass 2 x 10 3 kg having a charge of 1 C is suspended by a string of length 0 8 m Another identical ball having...
- Q Paragraph for Question Nos 12 to 14 Three concentric spherical conductors A B and C have radii R 2R and 4R respectively A and C is shorted and B is...
- Q Four charges are arranged as shown in figure A point Pis located at distance from the centre of the configuration take r A Then electric field at Pis 1 9...
- Q The work done by the electric field in terms of 10 25 J to turn an electric dipole 1920 in a uniform electric field of magnitude E 19 N C...
- Q insulating threads When the pith balls are given equal positive charge Q they hang in equilibrium as shown in figure 1 3 Q Now the charge on the left pith...
- Q A ring of insulating material is situated at one end of a semi infinite long line of charge If is charge per unit length for ring as well as line...
- Q Four charges particles each having charge Q are fixed at corners of base at A B C and D of a square pyramid with slant length a AP BP DP...
- Q 7 There is spherical symmetric charge distribution around origin The electrostatic potential at a Kr distance r from origin is given as V where K is a positive constant The...
- Q A charge of e is located at the origin and a charge e is located on the x axis at x 1 00 m The electric potential energy of an...
- Q Gauss s law is valid only for uniform charge distribution Gauss s law is valid only for charge place in vacuum The electric field calculated by Gauss s law is...
- Q Two particles A and B each carrying a charge Q are held fixed with a separation d between them A particle C having mass m and charge q is kept...
- Q 5 On the X axis and at a distance x from the origin the gravitational field due to a mass distribution is given by Ax in the x a 2...
- Q A hollow sphere having uniform charge density p charge per unit volume is shown in figure If b 2a remans Se and potential difference between A and B is n...
- Q Three charges are placed along x axis at x a x 0 and x a as shown in the figure The potential energy of the system is 9 9 1...
- Q Two charges q m and q m are connected a massless rod of length and released in a region of uniform electric field as shown 1 21 60 q Find...
- Q Three point charges 0 5 C 0 25 C and 0 1 C are placed at the vertices A B and C of an equilateral triangle ABC The length of...
- Q Assertion Consider a current carrying wire whose cross sectional area decreases gradually along the direction of current as shown in figure As one goes from cross section A to cross...
- Q Two particles X and Y are 4m apart X has a charge of Q and Y has a charge of 2 Q The force of X on Y O has...
- Q If the electric potential on the axis of an electric dipole at a distance r from it is V then the potential at a point on its equatorial line at...
- Q Two metal plates having a potential difference of 800 V are 2 cm apart It is found that a particle of mass 1 96 10 15 kg remain suspended in...
- Q 4 Two point charges q 2 C and q2 4 C are placed in the xy plane at the points P and P2 whose position coordinates are 0 0 and...
- Q A cone made of an insulating material has a total charge Q spread uniformly over its sloping surface Calculate the energy required to bring a small test charge q from...
- Q 34 The effective resistance between points P and Q of the electrical circuit shown in figure 2R 2R ww ww 2Rr R r Po www 2R ww wwwww 2R 2R...
- Q O A metal ribbon of some thickness has width and area of cross section A It is placed in a magnetic field B directed normal to the ribbon If there...
- Q Three identical metallic plates A B and C are initially given charges Q 4Q and 2Q respectively Now the plates A and C are connected by a conducting wire and...
- Q A charge Q is uniformly distributed in a dielectric sphere of radius R having dielectric constant unity This dielectric sphere is enclosed by a concentric spherical shell of radius 2R...
- Q 19 There are four concentric shells A B C D of radii a 2a 3a and 4a respectively Shells B and D are given charges q and q respectively Shell...
- Q 33 A point charge Q is placed inside a conducting spherical shell of inner radius 3R and outer radius 5R at a distance R from the centre of the shell...
- Q 2 A potential difference of V volts is applied on two parallel electrodes separated by a distance of 4 0 10 m The electrons of very low energy are injected...
- Q a QFour charge particles each having charge Q 1 c are fixed at the corners of the base A B C and D of a square pyramid with slant length...
- Q i Two identical small non conducting balls are charged t rubbing against each other They are suspended from ceilin rod through two strings of length L 20 cm each The...
- Q As shown in the fig charges q and q are placed at the vertices B and C of an isosceles triangle The potential at the vertex A is A q...
- Q Two small spheres each carrying a charge q are placed r metre apart and they interact with a force F If one of the spheres is taken around the other...
- Q 5 Neutral metal sphere of radius R is connected to earth through a switch S which is initially open Two charges 3Q and 2Q are kept at 9R and 3R...
- Q Question 20 1 point Two charged objects with mass are 1m apart if we increase the mass by 2x then a Gravitational Force between the 2 objects increases by 2x...
- Q A piece of wool is rubbed against a PVC strip What will be the charge on the strip if approximately 2 x 10 2 electrons are transferred from the wool...
- Q A long wire placed along z axis has linear charge density X for z 0 and o for z 0 If magnitude of electric field intensity at a point 5...
- Q Your friend is negatively charged and walks up and touches you to give you a shock What type of charging did you receive Positively charged by induction Negatively charged by...
- Q 1 In a rectangular coordinate system a charge of 25 x 10 C is placed at the origin coordinates and a charge of 25 x 10 C is placed at...
- Q 1 An infinitely long tube of semicircular cross section is given some electric charge One half of the tube is given a surface charge density o and the other half...
- Q A point charge of 5 C is located at 3 4 0 while line y 1 z 1 carries uniform linear charge density of 2 nC m use 1 48...
- Q Plane x 2y 10 carries uniform surface charge 3 density nC m Resulting electric field at a A point near to the plane makes an angle 0 with X Find...
- Q Three point charges are kept at points 4 0 4a 0 0 0 and B 0 4a as shown in the figure A 0 4a 15Q 5Q O 0 4a...
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