Physics question and answers for December 09, 2023
- Q 14 11 A straight conductor carrying a direct current i ampere is split into circular loop as shown in Fig below Then the magnetic induction at the centre o of...
- Q Please explain why 3T 2 2T 0 Comprehension IV A current loop of radius R having current is mounted on a rod along the axis of loop suspended by two...
- Q S B A rod of length rotates with a uniform angular velocity about an axis passing through its middle point but normal to its length in a uniform magnetic field...
- Q Wires 1 and 2 carrying currents i1 and 12 respectively are inclined at an angle to each other What is the force on a small element dl of wire 2...
- Q Why c will not be the ans 8 A rod of length rotates with a uniform angular velocity w about an axis passing through its middle point but normal to...
- Q particle q m enters at point A with velocity voj It moves through the electric field and exit at point B with velocity xi VI then E mv 8qa X...
- Q A small loop of wire of radius R carrying a constant current lies in the xy plane with its centre at the origin The component of the magnetic field B...
- Q 17 A flat coil of inner radius a and outer radius b has a large number N of turns of very fine wire which is closely wound What is the...
- Q A vertical ring of radius r and resistance R vertically It is in contact with two vertical conducting rails which are joined at the top The rails are without friction...
- Q Find the magnetic induction at the centre of a rectangular wire frame whose diagonal length is equal to d 16cm and the angle between the diagonals is equal to o...
- Q A current loop consist of two identical semi circular parts each of radius R one lying in the xy plane and other in the x2 plane If current in the...
- Q Two concentric coils each of radius equal to 2 cm are pl aced right angles to each other If 3A and 4A are the curre nts flowing through the two...
- Q A solenoid of 1000 turns per meter has a core of material having relative permeability 2001 A current of 2 A flows through the windings of the solenoid which are...
- Q a a P A negative test charge is moving near a long straight wire carrying a current The force acting on the test charge is parallel to the direction of...
- Q 42 A long straight wire carries a current TAN i in A 2 sin wt int 4 cos of The maximum T value of magnetic field produced by the wire...
- Q From a cylinder of radius R a cylinder of radius R 2 is removed as shown Current flowing in the remaining cylinder is Magnetic field strength is Fol de FFURFR...
- Q A flexible wire loop carrying a current I is placed in a uniform magnetic field B at an instant as shown in figure X X X X X X X...
- Q A cylindrical conductor of radius R carries a current i The value of magnetic field at a point which is R 4 distance inside from the surface is 10 T...
- Q 5 A long straight wire of circular cross section of radius 5 cm is carrying a steady current of 20 A uniformly distributed over its cross section The magnetic field...
- Q 4 1 9 x 10 6 T A straight wire carrying current of 15 A is bent into a semicircular arc of radius 2 5 cm at the centre of...
- Q to an 2 0 th of ved 4 59 A straight wire of diameter 0 5mm carrying a current 2A is replaced by another wire of diameter 1mm carrying the...
- Q A metallic rod of length I mass m and resistance R is moving with velocity v as shown in the figure Resistance fixed to rail is R The potential difference...
- Q A wire AB of length I and mass m is placed on a two vertical supports each having resistance R 2 The wire AB is free to move A cell...
- Q 3 A circular coil ABCD carrying a current i is placed in a uniform magnetic field If the magnetic force on the segment AB is F the force on the...
- Q A charged particle enters a uniform magnetic field perpendicular to it The magnetic field 1 Increases the speed of the particle 2 Decreases the kinetic energy of the particle 3...
- Q d resistance ertical time d on at time is constant on of the coil etween time P x x V ADC having some resistance is pulled with a constant velocity...
- Q A cylindrical cavity of radius is present in a current 2 carrying long wire of radius r A current flows through wire and distribution is uniform The magnetic field at...
- Q 40 46 The magnetic field at the centre of square of side a is c 2 po TQ 2 Hol 3 a R R 2R R stands for resistance of...
- Q Two particles of the same mass enter a magnetic field with the same speed and follow the paths shown Which particle has the bigger charge Ob Od Oc XX XXXX...
- Q Motional Electromotive Force Field 15 An aeroplane is flying horizontally with a velocity of 360 km h The distance between the tips of the wings of aeroplane is 25 m...
- Q A long straight wire of radius R carries a current distributed uniformly over its cross section The magnitude of magnetic field is O Maximum on the axis of straight wire...
- Q A linear magnet of magnetic moment M is bent in arc as shown in the given figure New magnetic moment is 1 M 3 3M TC S 2 4 2M...
- Q A pair of stationary and infinitely long bent wires is placed in the X Y plane as shown in figure The wires carry currents of 10A each as shown The...
- Q A circular loop of radius a 3m and carrying a current I is placed near an infinitely long straight wire carrying a current I as shown in the figure The...
- Q A galvanometer has a coil of resistance 100 2 and gives full scale deflection for 30 mA current If it is to work as a voltmeter of 30 V the...
- Q An ionised gas contains both positive and negative ions If it is subjected simultaneously to an electric field along the x direction and a magnetic field along the z direction...
- Q The graph between the magnitude of magnetic force as a function of the speed of a charged particle when it is projected perpendicularly to a given uniform magnetic field is...
- Q Figure shows a uniform magnetic field B confined to a cylindrical volume and increasing at a constant rate The instantaneous acceleration experienced by an electron placed at P is 1...
- Q 25 A current I flows in a long straight wire with cross section having the D form of a thin half ring of radius R Fig 3 61 Find the...
- Q A electron of charge per unit mass a is released from origin with a velocity V Voi in a uniform magnetic field B Bok If the particle passes through 0...
- Q 9 A current enters a uniform conducting loop of radius r at x and leaves at y Calculate the magnetic field at O due to the portion XAY of the...
- Q D Inside a homogeneous straight wire of circular cross section there is a cylindrical cavity whose axis is parallel to the conductor axis and displaced relative to it by a...
- Q A particle of charge q and mass m is projected from the origin with velocity v vo in a non uniform magnetic field B Boxk Here v and B are...
- Q 15 The magnetic field at the point O in the following current carrying square loop at the centre will be 2A a 12 10 5 T P 10 5 O...
- Q The current density j inside a long solid cylindrical wire of radius R 12 mm is in the direction of the central axis and its magnitude varies linearly with radial...
- Q 13 Find the total energy stored in the capacitors given in the circuit Fig 5 N 4 Delhi 2004 Ans 3 6 x 10 5 X and Y 6V C...
- Q carrying square loop is placed near an infinitely long current carrying wire as shown in the figure The torque acting on the loop is D P 2T 12 i i...
- Q no Hare Ma 1 nuol sin TC n COS I fed TC n I 2 COS tan n Ans 1 1 2 4 3 1 4 3 5 3 6...
- Q Magnetic Effect of Current 1 fed face fay face and land find the Magnetic field intensity at the went o for 1 a Ans H01 1 1 00 a Hol...
- Q 5 You are given an isolated capacitor of capacitance C without dielectric charged to a potential difference V How many times will each of the following become if a dielectric...
- Q A uniform magnetic field exists in a circular region of radius r The magnitude of magnetic field is B and point inwards An electron flies into the region radially as...
- Q 5 Two identical circular loops P and Q each of radius r and carrying equal currents are kept in the parallel planes having a common axis passing through O The...
- Q 1 Het and O ions mass of Het 4 amu and that of 02 16 amu they pass a region of constant perpendicular magnetic field If kinetic energy of all...
- Q A long cylinderical wire of radius b carries a current i distributed uniformly over its cross section Find the magnitude of the magetic field at a point inside the wire...
- Q 0 Equal currents are flowing in three infinitely long wires along positive x y and z directions The magnetic field at a point 0 0 a would be i current...
- Q In a square loop PQRS made with a wire of cross section current I entres from point P and leaves from point S The magnitude of magnetic field induction at...
- Q A conductor has three segments two straights of length L and a semi circular with radius R It carries a current I What is the magnetic field B at point...
- Q 0 B 0 b E 0 B 0 c E 0 B U If a projected charge passes through a zero gravity region remains undeviated or undeflected then fin possible...
- Q A short bar magnet placed on the table along the north south line Its north pole is directed towards geographic north then location of neutral points is A North B...
- Q A magnetic field is applied at perpendicular to the axis of cylinderical discharge tube then cathode and positive rays deflected in 2 Opposite direction 4 No deflection for both 1...
- Q 2 The momentum Na 3 The kinetic energy 4 None of these 22 A long straight hollow conductor tube carrying a current 22 ure has two sections A and C...
- Q QA particle of mass m and charge q is released from the origin in a region occupied by electric field E and magnetic field B such that B Boj E...
- Q A particle of mass m and charge q is moving ir region where uniform constant electric and m fields E and B are present E and B are parallel other...
- Q If a projected charge passes through a zero gravity region without change in its velocity then find por cases of electric and magnetic field in that region a E 0...
- Q 75 In a coil current falls from 5 A to 0 A in 0 2 s If an average emf of 150 V is induced then the self inductance of...
- Q electromagnetic wave is given by cos kz wt E Eo 2 At t 0 a positively charged particle is at the point x y z 0 0 7 If its...
- Q 0 A proton is moving towards north along horizontal line passes through a zero gravity region where electric and magnetic field are mutually perpendicular to each other The path of...
- Q In a certain region uniform electric field Ek and magnetic field B B are present At time t 0 a particle of mass m and charge q is given a...
- Q 1 In the figure galvanometer G gives maximum deflection when lllllll ele S N a magnet is pushed into the coil b magnet is rotated into the coil c magnet...
- Q c ac is induced in the loop d no current is induced in the loop In the given figure current from A to B in the straight wire is decreasing...
- Q 2 The figure shows a wire sliding on two parallel conducting rails placed at a separation 1 A magnetic field B exists in a direction perpendicular to the plane of...
- Q A hollow cylinderical wire carries a current I having inner and outer radii R and 2R respectively Magnetic field at a point which 3R 2 distance away from its axis...
- Q 2 The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer The magnet was held stationary for a few seconds with...
- Q d The end A of the solenoid potential uires 33 An infinitely long cylinder is kept parallel to a uniform magnetic field B directed along positive z axis The direction...
- Q 10 A current carrying long wire is placed along the z axis The current is flowing along the ve z direction Find the B due to this wire at i...
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