Physics question and answers for November 27, 2023
- Q Q 16 Your Answer 2m 81 85 86 Option 1 Option 2 3m A square loop is carrying a steady current I and the magnitude of its magnetic dipole moments...
- Q 35 The network shown in the figure is a part of a complete circuit If at a certain instant the current i is 5 A and is decreasing at the...
- Q With the decrease of current in the primary coil from 2 ampere to zero value in 0 01 second the e m f generated in the secondary coil is 1000...
- Q A rectangular loop of area 0 2 m is lying in a magnetic field of 5 x 102 tesla at an angle of 60 with the magnetic field The magnetic...
- Q An average induced e m f of IV appears in a coil when the current in it is changed from 10 A in one direction to 10 A in opposite...
- Q 4 A solid cylinder of mass m length 1 and radius R is placed on two horizontal paralle rails of separation 1 The cylinder carries a constant current i A...
- Q In an L C oscillation capacitor can be Qo If at any instant electrical 3 4 energy is th of the magnetic energy then the charge on capacitor at that...
- Q The voltage shown in the figure is applied to a 2 5 F capacitor and a 0 5 H inductor separately choose correct graph mA A C 0 123 E...
- Q A small square loop of wire of side I is placed inside a large square loop of side L L 1 If the loops are coplanar and their centres coincide...
- Q over a triangular wire CDE with a constant velocity V in a uniform magnetic field B directed into the plane of the paper Resistance per unit length of each wire...
- Q A conducting loop in the shape of a right angled isosceles triangle of height 10 cm is kept such that the 90 vertex is very close to an infinitely long...
- Q A Copper disc of radius 0 1 m is rotated about its centre with 10 revolutions per second in a uniform magnetic field of 0 1 Tesla with its plane...
- Q A conductor of mass m and length is given velocity Vo on a smooth horizontal conducting rails as shown Resistance is negligible for all Choose the correct options x is...
- Q Magnetic field in the cylindrical region is varying with time t as B Bot If a metal rod AB of length I is placed as shown then R B Electric...
- Q A square loop of side a 10 cm with its sides parallel to the x and y axes is moved with a constant velocity v 8 cm sec in the...
- Q Applied 6 There is no resistance in the inductive circut Kirchhoff s voltage law for the circuit is V V sino t 1 V L 0 di dt 3 V...
- Q In a series RLC circuit potential differences across R L and C are 30 V 60 V and 100 V respectively as shown in figure The e m f of...
- Q Shown in the figure is a circular loop of radius rand resistance 3 A variable magnetic field of induction B Boe is established inside the coil If the switch S...
- Q A thin non conducting ring of mass m radius R carrying uniformly distributed charge q is placed on smooth horizontal plane There exist an uniform time varying magnetic field in...
- Q The magnetic field in the region is decreasing in such a way that dB dt y If resistance per unit length of the loop shown is A then the current...
- Q View In English A conducting rod with resistance r per unit length is moving inside a vertical magnetic field at constant speed v on two horizontal parallel ideal conductor rails...
- Q A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in uniform magnetic field What should be the energy of an a particle to...
- Q th 3 2Bw A semicircular loop of radius R is rotated with an angular velocity to perpendicular to the plane of a magnetic field B as shown in the figure...
- Q A long wire carrying alternating current i io cos t is kept along the axis of a toroid The inner and outer radii of the toroid are R and R...
- Q Faraday s Law of induction 11 The loop moves towards a region of magnetic field Draw graph of i ve direction is marked in figure time Speed of coil is...
- Q 3 91 x 10 4 kg m sec 4 91 x 10 kg m sec Which of the following is not a unit of 4 self inductance 1 Weber Ampere...
- Q 2 A square shaped coil of side 20 cm is rotating at 60 revolutions per minute in a magnetic field of 1001 number of turns is thousands find maximum emf...
- Q A particle having mass m and charge q is projected with a velocity v making an angle with the direction of a uniform magnetic field B Calculate the magnitude of...
- Q 12 A square shaped coil of side 20 cm is rotating at 60 revolutions per minute in a magnetic field of 100 number of turns is thousands find maximum emf...
- Q A thin uniform conducting rod of mass M and length L oscillates in a vertical plane about a fixed horizontal axis passing through its top end The rod is oscillating...
- Q During the propagation of electromagnetic waves in a medium O Electric energy density is double of the magnetic energy density O Electric energy density is half of the magnetic energy...
- Q In an LCR circuit shown in the following figure what will be the readings of the voltmeter across the resistor and ammeter if an a c source of 220 V...
- Q A rectangular frame of negligible resistance with capacitor of capacitance C is placed nearby an infinitely long wire carrying current I lo sin wt wire and frame being in same...
- Q Q1 A coil of wire of area 5cm2 has 500 turns and self inductance of 100mH a Calculate the length of the coil b What will be the self inductance...
- Q D 26 One solenoid is centered inside another The outer one has a length of 50 0 cm and contains 6750 coils while the coaxial inner solenoid is 3 0...
- Q A circular insulated copper wire loop is twisted to form two loops of area A and 2A as shown in the figure At the point of crossing the wires remain...
- Q A copper disc of radius 0 1 m rotated about its centre with 10 revolutions per second in a uniform magnetic field of 0 1 tesla with it s plane...
- Q A coil of copper wire is connected in series with a bulb a battery and a switch When the circuit is completed the bulb lights up immediately The circuit is...
- Q Q3 A conducting circular loop is placed in a uniform Magnetic Field such that it s plane is perpendicular to the field having strength 0 5 T If the radius...
- Q 5 A magnet N S is suspended from a spring and when it oscillates the magnet moves in and out of the coil C The coil is connected to galvanometer...
- Q A copper ring having a cut such as not to form a complete loop is held horizontally and a bar magnet is dropped through the ring with its length along...
- Q 9 An aluminium ring B faces an electromagnet A The current I through A can be altered Then which of the following statement is correct 14 A B 0 1...
- Q 22 In the figure given below the magnet is moved towards the stationary coil with speed v and induced emf in the coil is E Now if magnet and coil...
- Q Two capacitors C C of capacitance 10 x 102 F each and an inductor L of inductance 2 x 10 2 H are connected in series as shown in the...
- Q A long solenoid of 20 turns per cm has a small loop of area 4 cm placed inside the solenoid normal to its axis If the current by the solenoid...
- Q 18 The electric field part of an electromagnetic wave in a medium is represented by Ex 0 N Ey 2 5 cos 2 x 106 rad t x 10 2...
- Q 2 A parallel plate capacitor is charged by a battery as shown in the figure If two circular amper an loops x and y are drawn then B di will...
- Q figure shows three circuits with identical batteries inductors and resistors Rank the circuits in the decreasing order according current through the battery i just after the switch is closed and...
- Q n a permanent magnet at room temperature Magnetic moment of each molecule is zero The individual molecules have non zero O magnetic moment which are all perfectly aligned Domains are...
- Q The flux linked with a circuit is given by 312 7 The graph between time x axis and induced emf y axis will be A straight line Circle Parabola hr...
- Q Energy stored in an inductor of inductance L will be is current O 2 LR 1 2 212 IN O 1 L1
- Q A 5 cm x 12 cm rectangular coil with number of turns 600 is placed in uniform magnetic field of strength 0 1 T The maximum magnetic torque acting on...
- Q Q6 In a region of free space the electric field at some instant of time is E 801 32j 64k V m and the magnetic field is B 0 21...
- Q Magnetic field B 1T is in a circular region of diameter 1m A rod initially located as diame starts moving perpendicular to itself with speed v 10 cm s Find...
- Q A thin semi circular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic field B in figure At the position MNQ the speed of...
- Q A thin semi circular conducting ring of radius Ris falling with its plane vertical in a horizontal magnetic field B in figure At the position MNQ the speed of ring...
- Q A solenoid has 2000 turns wound over a length of 0 3 m The area of its cross section is 1 2 10 m Around its central section a coil...
- Q A long solenoid of radius 10cm is surrounding coaxially by a larger coil of radius 20cm and length 5cm the longer coil has 1000 turns per metre and the larger...
- Q Two coaxial solenoids have radii 3 cm 2 cm and lengths 60 cm 100 cm and number of turns 200 300 respectively Their geometrical centres are coinciding Their mutual inductance...
- Q Consider the network as shown The current i depends on time t as i 10e 2t Then A 5 V ww00000 22 2H B At t 0 VA V 15...
- Q A rectangular loop made of flexible conducting wire carrying clockwise current is placed in uniform magnetic field as shown Choose the corred alternative X B x X X X b...
- Q Self inductance of solenoid is L which is mad by a wire of length then length of solenoid is 1 Ho 4x L 3 T 4Le Ha 2 4RLE Ho...
- Q The wires P Q1 and P Q2 are made to slide on the rails with the same speed 10m s If P Q moves towards left and P2Q2 moves towards...
- Q a rectangular conducting loop having side length a and b The mutual inductance of the given system is 2 31 Ha 27 In b a x a H b x...
- Q A metallic rod of length 1 resistance R is free to rotate about one of its ends over a smooth rigid circular metallic frame of radius in an inward magnetic...
- Q cting rings of radii r and 2r are moving in opposite direction with velocities 2v and v respectively as shown in figure on a conducting surface S There is a...
- Q 5 70 On a smooth horizontal table a disc is placed with non conducting ring with uniformly distributed charge q fixed on its circumference Both disc and ring are of...
- Q Q 90 current urther resulting curve 3 Rate n ving best represent the 1 Rate n
- Q In the figure shown is a R L circuit connected with a cell of emf through a key k If key k is closed find the current drawn by the...
- Q A metallic ring of mass 2 kg and radius 1m with a uniform metallic spoke of same mass 2kg and lengt 1 m is rotated about its axis with angular...
- Q A conducting rod of mass m and radius r is rotating at constant oo in uniform magnetic field B as shown in diagram at t 0 The value of i...
- Q In the circuit shown switch S is initially open and switch S is initially closed At time 0 S is close and at time t 0 25 s S is...
- Q The ends of a search coil having 20 turns area of cross section 1 cm and resistance 2 ohr connected to a ballistic galvanometer of resistance 40 ohms If the...
- Q Q6 A solenoid 25 0 cm long and with a cross sectional area of 0 500 cm contains 400 turns of wire and carries a current of 80 0 A...
- Q There is a metallic ring of radius 1 m having negligible resistance placed perpendicular to a constant magnetic field of magnitude 1 T as shown in figure One end of...
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