Physics question and answers for January 25, 2024
- Q 27 Which of the following statements is correct regarding electrostatics of conductors a The interior of a conductor can have no excess charge in the static situation b Electrostatic potential...
- Q Two spherical cavities of radii a and b are hollowed out from the interior of a neutral conducting sphere of radius R At the centre of each cavity a point...
- Q 5 A ring with a uniform charge Q and radius R is placed in the yz plane with its centre at the origin 1 The field at the origin is...
- Q Two positive charges q and q are located at the points with position vectors and 72 Find the magnitude of a negative charge q and the position vector 73 of...
- Q Two similar spheres having Q and Q charges are kept at a certain distance F force acts between the two If in the middle of two spheres another similar sphere...
- Q 17 Electric field due to a uniform positively charged arc AB of radius R at O is Q 1 A E DR 0 101 0 160 R 3Q 2 A...
- Q 14 A charge Q is placed at the origin The electric potential due to this charge at a given point in space is v The work done by an external...
- Q shell of same mass Shell is free to move on the is placed on the top of a hemispherical smooth ground If particle is given a gentle push and reaches...
- Q The force between two point charges in air is 100 N Calculate the force if the distance between them is incre Ev 50 Ans 4
- Q The electric intensity due to a dipole of length 10cm and having a charge of 500 C at a point on the axis at a distance 20cm from one of...
- Q An electric dipole of moment p is placed in a uniform electric field E The i The torque on the dipole is px E ii The potential energy of the...
- Q 8 C is at rest in 127 A pendulum bob of mass 80 mg carrying a charge of 2 x 10 uniform horizontal electric field E 20000 V m Find...
- Q 1 Two particles carrying charges q and q and having equal masses m each are fixed at the ends of a light rod of length a to form a dipole...
- Q A conducting spherical shell is given charge 2Q A point charge Q is kept inside the shell at point O as shown Now if charge Q is shifted from point...
- Q 20 Three charges Q q and q are placed at the vertices of a right angle triangle isosceles triangle as shown If the net electrostatic potential energy of the configuration...
- Q equilateral triangle with the ends of the piece 6 A long straight wire carries a current i Let B be the magnetic field at a point P at a distance...
- Q Two free positive charges 4q and q are a distance apart What charge Q is needed to achieve equilibrium for the entire system and where should it be placed from...
- Q 0 Three concentric metallic shells A B and C of radii a b and c a b c have surface charge densities o o and o respectively i Find the...
- Q 30 Equal charges q are placed at the four corners A B C D of a square of length a The magnitude of the force on the charge at B...
- Q Answer the following questions in brief A glass rod is rubbed against a silk cloth Which object s gets get charged in this process 1 3 4 5 neither between...
- Q ILLUSTRATION 3 51 Figure shows three thin concentric spherical shells A B and C with initial charges on A B and Cas 30 20 and Q respectively The shells A...
- Q 5 placed at vertex A due to the other charges Four charges each of Q Coulomb are situated at the four vertices of square of side length a Find the...
- Q 2 Two infinitely long uniformly charged non conducting sheets of charge density o 2 x10 each are placed perpendicular to each other as shown in figure What is the resultant...
- Q 1 ABC is an equilateral triangle of side 2m If E 10NC then V V is A A 1 10Y 2 10V B 3 20V 4 20V Ya and x...
- Q 11 Positive and negative point charges of equal magnitude are kept at 0 0 a 2 and 0 0 a 2 respectively The work done by the electric field when...
- Q A short dipole of dipole moment pj is the centre of a spherical cavity inside a solid metal sphere as shown Electric field at point P as shown on the...
- Q Take g 10 m s Two like charged infinitely long parallel wires with the same linear charge density of 3 10 C cm are 2 cm apart The work done...
- Q 2 Two opposite and equal charges 4 108 coulomb when placed 2 102 cm away form a dipole If this dipole is placed in an external electric field 4 x...
- Q An electric potential difference will be induced between the ends of the conductor shown in the figure when the conductor moves in the direction A P B Q C L...
- Q A point charge of 6 x 10 9 coulomb is placed at a distance of 30 cm from another point charge of 4 x 10 coulomb Determine the force on...
- Q 41 In a certain region of space with volume 0 2 m the electric potential is found to be 5 V throughout The magnitude of electric field in this region...
- Q An electron gun fires an electron beam of kinetic energy E with a very small divergence angle 0 To focus all the electrons to one point a magnetic field induction...
- Q 15 Consider a metal sphere of radius R that is cut in two along a plane whose minimum distance from the sphere s centre is h Sphere is uniformly charged...
- Q 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 of...
- Q Two equally charged identical metal spheres A and B repel each other with a force 3 x 10 5 N Another identical uncharged sphere C is touched with A and...
- Q www 4V 6V a 10 2 A b 10 A c 10 A d 0 A 6 A n p n transistor is connected in common emitter configuration in a...
- Q From A conducting sphere of radius R a cavity of radius R 2 is cut out as shown in the figure At the centre of cavity a point charge q...
- Q A solid sphere of radius R with its center at the origin is uniformly charged with density p in its volume A spherical cavity of radius is made in the...
- Q Two infinite nonconducting sheets of uniform charge density 8 and 8 are parallel to each other as shown Electric field at the 8 8 1 midpoint in the space between...
- Q 3 Two point charges q 0 2 C and q2 0 4 C are 0 1 m apart Find the electric field at i mid point between the charges ii...
- Q 15 In the given electric field E d x i E j N Ca hypothetical closed surface is taken as shown in figure The total charge enclosed within the closed...
- Q Two uniform infinite planes of charge having charge densities o and o intersect at right angle The magnitude of electric field at any position in the space is 1 O...
- Q A point charge q is kept at the centre of curvature of thin semicircular wire of length as shown The wire has uniformly distributed charge q on it The dipole...
- Q 4 The figure shows a conducting sphere A of radius a which is surrounded by a neutral conducting spherical shell B of radius b a Initially switches S S and...
- Q Four equal charges l C each are placed at the four corners of a square of each side 3cm Find the force experienced by each charge due to the other...
- Q 0 Small identical balls with equal charges are fixed at vertices of regular 2008 gon with side a At a certain instant one of the balls is released a sufficiently...
- Q 4 Three positive charges q 2q 3q are placed at the corners of an equilateral trian If the length of each side of the triangle is d find the direction...
- Q Two metallic concentric shells are shown Before closing the switch charge on inner shell is Q and charge on outer shell is 20 Potential at point A is V What...
- Q A point source of e m radiation has an average power output of 60 W What is the maximum value of electric field at a distance 3 0 m from...
- Q At a point 20 cm from the centre of a uniformly charged dielectric sphere of radius 10 cm the electric field is 100 V m The electric field at 3...
- Q Four rigid rods AB BC CD and DA each of linear mass density and length a are connected rigidly to form a square frame This system is placed in an...
- Q 31 An infinite number of charges each of charge 1 C are placed on the x axis with co ordinates x 1 2 4 8 oo If a charge of...
- Q A charge Q is given to a conducting sphere radius R Now if a charge Q is placed as shown at a distance r from the centre then magnitude of...
- Q Four particles having masses m 2m 3m and 4m are placed at the four corners A B C and D of a square ABCD of side a The gravitational force...
- Q Linear charge density of arc is and total angle a Derive an expression for potential at centre C 1 Kha 3 Kha 2 K a r 4 Kar
- Q A neutral metal sphere is placed at a large distance from a point charge The magnitude of Coulomb electrostatic interaction force between the charge and sphere is F If the...
- Q 43 Electric field of a dipole is related to distance r as E x 7 Ex c Exc r Ex a Ex b Exc d Ex 20
- Q 17 Two infinite parallel non conducting sheets carry equal positive charge density a One is placed in the yz plane at x 0 and the other at x a Take...
- Q A disc of radius R is kept such that its axis coincide with the x axis and its centre is at d 0 0 The thickness of disc is t...
- Q 7 The electric potential in a certain region of space along X axis varies as V 3x 5 where x is in metre and V in volt The electric field...
- Q experiences a force of 4 x 10 N Calculate the charge present on Two electrons are placed at a distance d such that electrostatic force between both the electrons is...
- Q 9 A 2 Eor A 9 B 4 r F Let there be a spherically symmetric charge distribution with charge density varying as 5 p r Pol 4 2 R...
- Q A 10 N Two uniformly charged non conducting hemispherical shells each having uniform charge density o and radius R form a complete sphere not stuck together and surround a concentric...
- Q A E C D 9 In the given figure if Q and Q are positive where could a negative charge be placed so as to have vertically upward net force...
- Q 20 C charge is placed inside a closed surface then flux related to surface is If 80 C charge is added inside the surface then change in flux is 1...
- Q Consider a conductor with a spherical cavity in it A point charge q is placed at the centre of cavity and a point charge Q is placed outside conductor Statement...
- Q 9 Electric field in a region is found to be E 3yj The total energy stored in electric field inside the cube shown will be A 9a C 3 B...
- Q electric interaction between these dipoles will be dipoles are placed as shown r is the distance between their centres The energy of C is centre of dipole of moment P2...
- Q Two objects placed at some finite distance repel each other then Both must be positively charged Both must be negatively charged Both may be uncharged Both may be negatively charged
- Q 20 An electric dipole consists of two opposite charges of magnitude q 3 x 106 C separated by 0 02 m The dipole is placed in an external field of...
- Q 4 Two point charges 9e and e are kept at a distance a from each other Where should we place a third charge q on the line joining the two...
- Q tration 2 10 2 a particles nuclei of helium fall per second on a neutral sphere calculate the time in which the sph gets charged by 2 C
- Q 1 201 301 22 m n potential at origin is zero Find poten
- Q The electric potential in a region is given by V x y z ax ay abz a is a positive constant of appropriate dimensions and b a positive constant such...
- Q A small sphere of mass m and having charge q is suspended by a silk thread of length in a uniform horizontal electric field If it stands at a distance...
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