Physics question and answers for January 30, 2024
- Q Two parallel infinite line charges with linear charge densities C m and C m are placed at a distance of 2R in free space What is the electric field mid...
- Q In a certain region of space electric field is given by 21 3j 4k The change in potential of a point charge which is moved from point 1 0 5...
- Q A cathode ray tube is shown in Figure Q3a Electrons increase speed due to the accelerating voltage before emerging through a hole in the anode and then travel into a...
- Q The electric field in a certain region of space obeys Ey 0 Ex Ez 0 and JE ax 0 0 E Oy 0 E Oz 0 Then net torque on...
- Q The bob of a pendulum has mass m 1kg and charge q 40 C Length of pendulum i 1 0 9 m The point of suspension also has th same...
- Q A conducting sphere of radius R and change Q is placed near a uniformly charged non conducting infinitely large thin plate having surface charge density o The find the potential...
- Q 39 The magnitude of the each of two opposite charges that form an electric dipole is increased by a factor of while the separation between the charges is tripled What...
- Q Following figure shows S S and S i ii iii Q S iv S Now match the following columns and mark the correct code given below Column I s PS...
- Q lg of cork with a charge 1 C floats motionless 1 cm above a large uniformly charged plane near the surface of the earth The surface charge density of the...
- Q The electric potential decreases uniformly from 120V to 80V as one moves on the X axis from x 1 cm to x 1 cm The electric field at the origin...
- Q A non conducting spherical ball of radius R contains a spherical symmetrical charge with volume charge density p Kr where r is the distance from the centre of the ball...
- Q Question statements is true V 30 V S3 A B C S F C 2pF V 20 V F C 3pF With S closed V 15 V V 20 V...
- Q C d 2 2 19 Two charges of 10 C are placed at the corners A and B of an equilateral triangle of side length 0 5 m in air...
- Q 15 A charged particle of mass m 2 kg and charge 1 C is thrown from a horizontal ground at an angle of 45 with horizontal with a speed of...
- Q 170 Electrostatic 3 If the electric potential on the surface of innermost sphere is zero then relation between a b and c is o is surface charge density b 1...
- Q B C 2 Ecost Meit sind a 4 A rigid frame in the shape of a right pyramid is made of conducting rods The base ABCD is a square and...
- Q 3 x 3 9 Marks II Each question carries 3 mark 3 Two metal spheres of different sizes are charged such that the electric potential is the same at the...
- Q 13 An annular disc of inner radius R and outer radius 2R has uniformly distributed charge Q Electric field strength at point P is 1 Q 3 E R PiT...
- Q 17 Two equal positive point charges are separated by a distance 2a A point test charge is located in a plane which is normal to the line joining these charges...
- Q 1 Assertion If two concentric conducting sphere are connected by a conducting wire no charge can exist on inner sphere Reason When charge on outer sphere will exist then potential...
- Q A point charge Q is located at the centre of a hollow spherical conductor having inner radius as R and outer radius R The conductor being uncharged initially The potential...
- Q 3 Assertion Consider a conducting sphere of radius R Now a charge q is placed in front of a sphere Electric potential at point O is kq r B R...
- Q A particle of charge q and mass m moves under the action of an electric field E 2x where x is a distance from the point where the particle was...
- Q A small electric dipole of dipole moment P is placed near a point charge Q as shown Then the net force on the dipole is towards Option A B towards...
- Q Two parallel nonconducting rings are arranged with their central axes along a common line The whole arrangement is shown in the figure Ring 1 has uniform charge q and radius...
- Q xiv Two identical beads each having a mass m and charge c When placed in a hemispherical bowl of radius R wit frictionless non conducting walls the beads move and...
- Q The charge per unit length of the four quadrant of the ring is 22 2A and respectively The electric field at the centre is A B 2 2 R a...
- Q 6 A conducting spherical shell of inner radius 2R and outer radius 3R has a positive point charge q located at its centre What is the electric potential at point...
- Q ALLE In figure A and B are two identical blocks made of 2 a conducting material These are placed on a horizontal frictionless table and connected by a light conducting...
- Q 40 180 Mark for Review Equipotential surfaces associated with an electric field which is along y direction are O Planes parallel to xz plane O Planes parallel to xy plane...
- Q A ring of radius R with a uniformly distributed charge q as shown in figure 1 37 A charge qo is now placed at the centre of the ring Find...
- Q 8 m At a certain distance from a point charge in C the electric field is 200 V m and the potential is 800 V What is this distance 04m...
- Q Two very small spheres having charge Q and Q face each other at a certain distance between them If a dielectric having dielectric constant Kinserted between them then electrostatic force...
- Q Three charges 9 and q are placed at the corner of an equilateral triangle of side a as shown in the figure The net electric dipole moment of the system...
- Q 9 kV O 18 KV Four charges 1 C 2 C 3 C and 4 C are placed at 1 m 2 m 3 m and 4 m from origin...
- Q 34 A small conducting sphere is hanged by an i thread between the plates of a parallel plate capacitor as shown in figure The net force on the sphere is...
- Q 256 Two equal point charges are fixed at x a and x a on the x axis Another point charge Q is placed at the origin The change in the...
- Q 56 Three particles are projected in a uniform electric field with same velocity perpendicular to the field as shown Which particle has highest charge to mass ratio B A
- Q Two short electric dipoles of moment P and 8P are placed in opposite direction on a line at a distance of 15 cm The electric field will be zero at...
- Q Two point charges 6 C and 16 uC repel each othe with a force of 120 N If a charge of 8 C is added to each of them then...
- Q 7 2 J Two positive point charges of 10 u C and 4 C are 10 cm apart The work in bringing them 5 cm closer is O 2 4...
- Q A conducting loop has a charge of q 4 C The thickness of the loop is negligible and its radius is r 6 cm What is the electric field E...
- Q A point charge q is placed at th concentric cavity of a neutral metallic sphere a Kq 1 kala 2 3 O b R A Find the electric field at...
- Q The volume charge density of a sphere carrying charge Q and of radius Ris proportional to the square of the distance from the centre The ratio of the magnitude of...
- Q The diagram shows three infinitely long uniform lin charges placed on the X Y and Z axis The work don in moving a unit positive charge from 1 1 1...
- Q shows three electric field lines If FA FB and Fc are forces on a test charge q at positions A B and C respectively then A 1 FA FB FC...
- Q Figure shows electric field lines due to a charge configuration from this we conclude that 9 92 1 q and q are positive and q q 9 92 2 q...
- Q Four charge particles A B C D of mass m and charge q each are connected by light silk threads of length d forming a tetrahedron floating in gravity free...
- Q 30 180 O 20e A ball with charge 20e is placed at the centre of a hollow spherical shell which has net charge of 40e The charge on the shell...
- Q As shown in the figure the electric field lines on the right have twice the separation of those on the left If a charge particle takes time t to move...
- Q O AF Two small charged spheres separated by a distance d exert a force Fon each other If they are immersed in a liquid of dielectric constant 4 then new...
- Q 02 09 hr mi The electric field created by a line charge falls with distance from line charge as 01 04 20 Or
- Q 226 Three identical charges are placed at corners of an equilateral triangle of side 1 If force between any two charges is F then the work required to double the...
- Q The intensity of electric field inside capacitor is E The work done to move a charge q in a closed rectangular loop once is 1 E 2a 2b 2 E...
- Q An electric dipole of moment p placed in uniform electri field E has minimum potential energy The work done by external agent to rotate this dipole very slowly upto which...
- Q The electric field Eat a point just outside a perfect conducto is O Parallel to the surface O Zero O Perpendicular to the surface 02 59 hr min O Can...
- Q When one proton is taken towards the other proton then electric potential energy of the system O Decrease O Increase O Remains unchanged 02 hr Becomes zero
- Q O 2Th An electric dipole is situated in electric field of uniform intensity Ewhose dipole moment is P and moment of inertia If the dipole is slightly disturbed from the...
- Q Electric potential at any point V 4x 3y 5z then magnitude of electric field in the space will be O 5 N C O 10 N C O 5 2...
- Q Magnitude q each are placed at the vertices of a square of side length a with origin O at centroid Find the electrostatic potential at point P given OP r...
- Q 17 Figure a shows a uniformly charged ring of radius R Its axis is along the x axis and the ring is in the yz plane Point P lies on...
- Q 225 A solid conducting sphere of radius a having a charge q is surrounded by a concentric conducting spherical shell of inner radius 2a and outer radius 3a as shown...
- Q 112 Electric 6 The linear charge density on the semicir in magnitude is same The electric field at the centre is LAX AL YA Kavis C 1 Along x axis...
- Q 1 A long thin inextensible light thread is wound on a fixed cylinder of Ja radius r and a positively charged bead P of mass m is attached to the...
- Q 11 Two parallel metal plates each of area S carry iden tical charge Q The distance between the plates is much less than their linear dimensions What are the values...
- Q 11 Four charges of 6 C 2 C 12 C and 4 C are placed at the corners of a square of side 1m The square is in xy plane...
- Q Two concentric spheres of radii R and r have similar charges with equal surface charge densities o What is the electr potential at their common centre aleo R r 2...
- Q Two identical metallic balls A and B have charges 40 and 10 C respectively The distance between them is 2 0 m What is the magnitude and type of force...
- Q Q 14 The electrostatic flux through a rectangular area of 1 m lying in a plane 2x 3y 6z 10 due to an electric field 81 63 10k V m...
- Q 1 An uniform electric field of magnitude E is set up is a region of gravity free space in upward direction An electron of mass m is projected at an...
- Q 1 Two metallic concentric shells are shown Before closing the switch charge on inner shell is Q and charge on outer shell is 2Q and potential at point A is...
- Q Consider the circuit shown below Is is constant current source meaning that no matter what device is connected between points A and B the current provided by the constant current...
- Q In a certain region of space a uniform and constant electric field and a magnetic field parallel to each other are present A proton is fired from a point A...
- Q 9 The electric field in a region is given by E ax i Here a is a constant of proper dimensions Z D H F X x 1 x 21...
- Q 17 Three concentric metal shells A B and C of respective radii a b and c a b c have surface charge densities o o and o respectively The potential...
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