Physics question and answers for December 08, 2023
- Q A particle with a charge of 7 4 nC is moving in a uniform magnetic field of B 2 25 T K The magnetic force on the particle is measured...
- Q 8 Two a particles have the ratio of their velocities as 3 2 on entering the field If they move in different circular paths then the ratio of the radii...
- Q the magnetic force on the wire is a 0 14 N b 0 24 N c 0 34 N d 0 44 N 12 The magnetic force per unit length...
- Q c 4 x 10 5 N 14 A rectangular coil ABCD is hung from one side of a balance as shown in figure A 500 g mass is added to...
- Q A circular coil 0 0500 m in radius with 30 turns of wire lies in a horizontal plane It carries a counterclockwise as viewed from above current of 5 00...
- Q d any one of i ii and iii 0 Two particles of equal charges after being accelerated through the same potential difference enter in a uniform transverse magnetic field and...
- Q 2 A charged particle with charge q enters a region of constant uniform and mutually orthogonal fields E and B with a velocity perpendicular to both E and B and...
- Q a 30 b 45 c 60 d 90 D The horizontal component of earth s magnetic field at a certain place is 3 0 x 10 5 T and having...
- Q 13 A circular coil of 20 turns and 10 cm radius is placed in a uniform magnetic field of 0 10 T normal to the plane of the coil If...
- Q A 2 5 m long straight wire having mass of 500 g is suspended in mid air by a uniform horizontal magnetic field B If a current of 4 A...
- Q An electron beam is retarding in same plane of coil X coil Y as shown in figure Direction of induced currents in coil X coil Y respectively will b Coil...
- Q Which one of the following is not correct about Lorentz Force a In presence of electric field E r and magnetic field B r the force on a moving electric...
- Q A current of 10 A is flowing in a wire of length 1 5 m A force of 15 N acts on it when it is placed in a uniform...
- Q 36 A loop shown in the figure is immersed in the varying magnetic field B Bot directed into the page If the total resistance of the loop is R then...
- Q 6 A straight wire having mass of 1 2 kg and length 1 m carries a current of 5 A If the wire is suspended in mid air by a...
- Q 14 Electric charge q is distributed uniformly over a rod of length 1 The rod is placed parallel to a long wire carrying a current i The separation between the...
- Q 88 Resistances P Q S and R are arranged in a cyclic order to form a balanced Wheatstone s network The ratio of power consumed in the branches P Q...
- Q Four wires each of length 2 0 m are bent in four loop P Q R and S then suspended in uniform magnet field All loop carries equal currents which...
- Q O O Sp 3 A large frictionless disk can rotate about its central vertical axis in a uniform static magnetic field of induction B pointing vertically upward A particle P...
- Q Keeping current per unit length of arc constant the variation of magnetic field at the centre of an arc B with the angle subtended by the arc at the centre...
- Q A long straight wire carrying current of 30 A rests on a table Another wire AB of length 1 m mass 3 g carries the same current but in the...
- Q A magnet magne noment ZUK mz is placed along the z axis in a magnetic field B 0 4j 0 5k T The torque acting on the magnet is A...
- Q 27 A short magnet oscillates in vibration magneto meter with a frequency 10Hz where horizontal component of earth s magnetic field is 12 T A downward current of 15A is...
- Q 5 A charged ball B hangs from a silk thread S which makes an angle P with a large charged conducting sheet P as shown in the figure The surface...
- Q A plane electromagnetic wave travels in vacuum along z direction What can you say about the directions of its electric and magnetic field vectors If the frequency of the wave...
- Q 25 A magnetic needle of pole strength 20 3 Am is pivoted at its centre Its N pole is pulled eastward by a string The horizontal force required to produce...
- Q FIELD 73 An electric dipole is placed at an angle of 30 with an electric field of intensity 2 x 10 NC It experiences a torque equal to 4 N...
- Q he drawing shows four insulated wires overlapping one another forming a square with 0 050 m sides All four wires are much longer than the sides of the square The...
- Q 1 lc Which of the following statement is false for the properties of electromagnetic waves 1 These waves do not require any material medium for propagation 2 Both electric and...
- Q 4 4 A conducting rod AC of length 4 is rotated about a point O in uniform magnetic field B directed into the paper AO 1 and OC 31 Then...
- Q Two circular coils X and Y having equal number of turns carry equal currents in the same sence and subtend same solid angle at point O If the smaller coil...
- Q 9 For the circuit shown in figure the direction and magnitude of the force on PQR is A No resultant force act on the loop C ILB into the page...
- Q An electric current passes through a long straight wire At a distance 5 cm from the wire the magnetic field is B The Field at 20 cm from the wire...
- Q 15 Two long parallel wires are separated by a distance of 2 m They carry a current of 1A each in opposite direction The magnetic induction at the midpoint of...
- Q Two long straight conductors are held parallel to each other 7cm apart The conductors carry currents of 9A and 16A in opposite directions The distance of neutral point from the...
- Q 2 A long straight wire carries an electric current of 2A The magnetic induction at a perpendic distance of 5 m from the wire is 4 x 10 7 Hm...
- Q 1 5 T north 2 10 T north 3 l TOUDUT A current of 5 A is flowing through a long straight copper wire The ratio of the magnetic induction...
- Q A conducting wire in the shape of Y with each side of length is moving in a uniform magnetic field B with a uniform speed v as shown in the...
- Q 35 A triangular current carrying wire loop with current i is placed in a uniform and transverse magnetic field as shown in the figure X A 30 120 1 F...
- Q wo long parallel wires carry currents of I 2 95 A and I 4 75 A in the directions indicated in the figure below where d 23 5 cm Take...
- Q Copper disc of radius 10 cm is rotating in magnetic field B 0 4 gauss with 10 rev sec What will be potential difference across peripheral points of disc 1...
- Q A cell is connected between two points of a uniformly thick circular conductor as shown in figure Magnetic field at the centre of the loop due to the circular conductor...
- Q A long solenoid of radius R carries a time t dependent current I t L 1 t A ring of radius 2R is placed coaxially near its middle During the...
- Q A wire carrying current I has the shape as shown in adjoining figure Linear parts of the wire are very long and parallel to X axis while semicircular portion of...
- Q A cube made of wires of equal length is connected to a battery as shown in the figure The magnetic field at the centre of the cube is 0 F...
- Q An electron travelling with velocity v enters a region of space in which electric and magnetic fields exist Then the electron goes undeflected for all values of fields 1 If...
- Q A vertical wall is in south north direction A current carrying wire is kept in the wall such that to the west of the wall magnetic field due to wire...
- Q s Physics R 20 5 outer conductor is hollow of inner radius R and outer radius R The space between the conductors is filled with air The inner and outer...
- Q A long straight wire carrying current i is bent at its midpoint to form an angle of 45 Find the induction of magnetic field at point P at a distance...
- Q Figure shows the path of an electron in a region of uniform magnetic field The path consists of two straight sections each between a pair of uniformly charged plates and...
- Q The current is flowing in one direction in two parallel conductors situated in vacuum which type of force will work between them b Attraction b replication c both d None...
- Q 1 Vay Find direction of induced current for the given cases Where w r t with respect to time ob observer O Viny If It w r t Motion O...
- Q Radius of current carrying coil is R If fractional decreases in field value with respect to centre of the coil for a near by axial point is 1 20 then...
- Q 4 Statement 1 is False Statement 2 is False STATEMENT 1 When a particle is projected at some angle 90 with horizontal the radius of curvature of its path during...
- Q ALI the path of an electron in a region of uniform magnetic field The path consists of two straight section each between a pair of uniformly charged plates and two...
- Q A circuit element is placed in a closed box At time t 0 constant current generator supplying a current of 1 amp is connected across the box Potential difference across...
- Q 12 A current i is uniformly distributed over the cross section of a long hollow cylindrical wire of inner radius R and outer radius R Magnetic field B varies with...
- Q d 17 Given figure shows a coil bent with all edges of length 1 m and carrying a current of 1 A There exists in space a uniform magnetic field...
- Q 3 An electron is projected with velocity vo in a uniform electric field E perpendicular to the field Again it is projected with velocity vo perpendicular to a uniform magnetic...
- Q 33 Infinite number of straight wires each carrying current I are equally placed as shown in the figure Adjacent wires have currents in opposite direction Net magnetic field at point...
- Q The current flows through an equilateral triangular loop of side length If magnetic field at the centroid of the triangula loop is No then find the value of N 6...
- Q 5 OABC is a carrying square loop An electron is projected from the centre of loop along its diagonal AC as shown Unit vector in the direction of initial acceleration...
- Q Three long wires each carrying current i are placed parallel to each other The distance between I and II is 3d between II and III is 4 d and between...
- Q At a place horizontal and vertical components of earth s magnetic field are as follows BH 3 G 10 west of north By 1 G vertically downward Then dip angle...
- Q 9 An air filled toroidal solenoid has a mean radius of 15 0 cm and a cross sectional area of 5 00 cm When the current is 12 0 A...
- Q upward direction y direction is placed near the surface of earth as shown in figure Neglect the earth s magnetic field y a 0 A At some time t a...
- Q 1 12 hree long straight wires are located at the corners of an equilateral triangle of side L 30 cm as shown in the figure above I 5 A 2...
- Q The figure shows an end view of two long parallel wires perpendicular to the x y plane Each wire carries a current 1 5 A but in opposite directions Calculate...
- Q SolveLancer Test There is a ring of mass m radius R and has a charge uniformly distributed charge q The ring is cut into half and rotate about one of...
- Q Figure shows circular region of radius R 3 m in which upper half has uniform magnetic field B 0 2 k T and lower half has uniform magnetic field B...
- Q The magnetic moment of a thin round loop with current if the radius of the loop is equal to R 100 mm and the magnetic field at its centre is...
- Q A conducting wire bent in the form of a parabola y 2x carries a current i 2A as shown in figure This wire is placed in a uniform magnetic field...
- Q The magnetic flux density in a region of free space is given as B 6xax 9yay 3za T the force on the side 4 of rectangular loop shown in Figure...
- Q A metal strip 6 50 cm long 0 850cm wide and 0 760mm thick moves with constant velocity through a uniform magnetic field B 1 20mT directed perpendicular to the...
- Q Several a particles of different speeds enter a uniform magnetic field confined into cylindrical region If all the a particles enter the field radially what can you say about time...
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