Physics question and answers for November 28, 2023
- Q A rectangular loop of N closely packed turns is positioned near a long straight wire as shown in figure The rectangular loop performs linear SHM with its distance a varying...
- Q A conducting ring of radius R is rolling without sliding on horizontal surface A uniform magnetic field B perpendicular to plane of the ring exist in the region Choose the...
- Q Problem 15 The electrical equivalent circuit of a crystal consists of a series L 1 H 90 C 0 01 pF R 1 k connected in parallel with capacitor C...
- Q A capacitor of capacitance 2uF is firstly charge by connecting across a 200 V battery then it is allowed to get discharged through a resistor R The figure shows an...
- Q Capacitor of capacitance Cis connected to parallel conducting rails A conducting rod of mass mand length connected to spring of spring constant k is placed on rails The whole arrangement...
- Q po The lower and upper half power 3 dB frequencies of an RC coup amplifier are 20 Hz and 20 kHz respectively Find the frequencies at which the level is...
- Q A series combination of resistor R and capacitor C is connected to an AC source of angular frequency Keeping the voltage same if the frequency is changed to c 3...
- Q The network shown in figure is part of a complete circuit A www 192 15 V 5 mH vooooooo If at a certain instant the current is 5 A from...
- Q Consider the shown network the capacitor C 6 30e F has an initial charge C C 4 F e 1 and R 80 Q Initially C is uncharged At t...
- Q A rectangular loop of sides 20 cm 10 cm carrying I of 12 A is placed in different orientations as shown in the figures below If there is a uniform...
- Q A toroid having a rectangular cross section a 2 00 cm by b 3 00 cm and inner radiu r 4 00 cm consists of 500 turns of wire that...
- Q A conducting loop is pulled with a constant velocity towards a region of uniform magnetic field B as shown in figure Then the current induced in the loop is d...
- Q This section contains 8 multiple choice questions Each question has 4 choices A B C and D for its answer out of which one or more than one is are...
- Q L R circuit is shown in figure just after the key K is closed mooooooo E R www K The current in the circuit is zero Potential drop across the...
- Q O 11 40 17 5 A In the L R circuit the value of Lis T resistance Ris 30 Q If in the circuit an alternating em of 200 V...
- Q A charge q having mass m enters a circular region of radius R having magnetic field B n RqB If the velocity of the particle is then m it passes...
- Q Consider the circuit as shown in diagram In steady state L ooooo 2 mH 100 V S 492 292 4 mH L Current through inductor L is 25 A Potential...
- Q In a cylindrical region of radius R there exists a time dB varying magnetic field B such that k 0 A dt charged particle having charge q is placed at...
- Q A current carrying infinitely long wire is kept along the diameter of a circular wire loop without touching In which of the following cases no emf is induced in the...
- Q a Internal field is produced when the electric field is applied across the dielectric Is this statement true Hence deduce the clausius mosotti relation from internal field equation CO3 OR...
- Q 39 A metallic slider of length L is moving on a wire frame with resistance R kept in uniform magnetic field B at a speed v as shown in figure...
- Q For zener diode shown in figure the V at knee is 7 volt the knee current is negligible and zener diode dynamic resistance is 1002 If the input voltage V...
- Q Consider the circuit as shown in diagram In steady state 49 L XXX00 2 mH 100 V S 20 4 mH L Current through inductor L is 25 A Potential...
- Q Consider a single loop circuit with a resistor R 160 2 a capacitor C 10 uF an inductor L 200 mH and an alternating source with Emax 36V If the...
- Q A solenoid has a core of a magnetic material with relative permeability 500 Number of turns in the solenoid are 1000 per metre and carry a currents of 5 A...
- Q A 150 resistor a 10 F capacitor and a 0 1 H inductor are connected in series to an A C source operating at an angular frequency w a Find...
- Q An ideal battery of emf E is connected across the parallel combination as shown in figure Switch S is kept closed for long time and it is opened at time...
- Q 2 Two concentric circular coils X and Y of radius 20 cm and 25 cm respectively lie in the same vertical plane Coil X has 40 turns and coil Y...
- Q Figure shows two circular rings of radii a b a b joined together by wire of negligible resistance If the arrangement is placed in a time varying magnetic field k...
- Q The switch S in the circuit below is closed and then opened The closed conducting loop will show R An anticlockwise current A clockwise current O Loop An anticlockwise current...
- Q A circular conducting ring is rotated about one its diameter in a magnetic field 1 If magnetic field is uniform no emf will be induced 2 If magnetic field is...
- Q Question No 12 Phy Section B This section contains 15 SINGLE CORRECT TYPE questions Out of these 15 questions candidate can choose to attempt any 10 questions A time varying...
- Q 3 3 Two sliding rods each of length is moving with velocity v and 2v as shown in the given figure in presence of external magnetic field B The current...
- Q In series RLC circuit shown in the figure bulb shines When inductor is short circuited then light emission of bulb does not change How does it change when capacitor is...
- Q A metallic rod of length 1 2 m is rotated with frequency of 50 rev s with one end hinged A constant and uniform magnetic field of 0 5 T...
- Q A wire PQ of length 2 m is made to slide on two parallel conducting rails with constant speed 1 m s The trails are connected together by a resistance...
- Q 17 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...
- Q Match Type with 3 Columns 4 Rov For conducting rods each of length R are rotating about 8 Straight wire s carrying I current provides magnetic field Various arrangements of...
- Q Three identical large metal plates are fixed at separation of d from each other as shown The area of each plate is A Plate Q 1 is given charge Q...
- Q A wire PQ of length 2 m is made to slide on two paralle conducting rails with constant speed 1 m s The trails are connected together by a resistance...
- Q A current of 2 mA was passed through an unknown resistor which dissipated a power of 4 4 W Dissipated power when an ideal power supply of 11 V is...
- Q 22 The current I in the inductance is varying with time according to the plot shown in figure a c hd T 2 Which one of the following is the...
- Q inductor in A to 3 A in 0 V sed on the e direction law and aws is the s true and mation of s true but nation of false...
- Q Q 18 A square coil ABCD with its plane vertical is released from rest in a horizontal uniform magnetic field B of length 2L The COLLE acceleration of the coil...
- Q BC rying loop ABCD is shown where CA L BDC is a semicircle A concentric conducting circular loop of radius r is coplanar and semicircular part Current I in the...
- Q 2 25 A plane loop is shaped in the form as shown in figure with radii a 20 cm and b 10 cm and is placed in a uniform time...
- Q In the circuit shown switch s was closed for a long time At time t 0 switch is opened Find maximum charge in Coulomb stored on the capacitor after opening...
- Q Statement A When a charge particle of charge d moves with a velocity vin magnetic field of induction then force acting on it is F q vx B Statement B...
- Q of resistance R capacitor of C and inductor of inductance L are in parallel to AC power source of voltage sin oot The maximum current through the resistance is half...
- Q A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring The acceleration of the falling magnet...
- Q A 0 1 m long conductor carrying a current of 50 A is held perpendicular to a magnetic field of 1 25 mT The mechanical power required to move the...
- Q A square coil of side 25 cm having 1000 turns is rotated with a uniform speed in a magnetic field about an axis perpendicular to the direction of the field...
- Q A 1 m long thin metal bar of negligible resistance weighing 1 kg rests on two metal supports as shown in the figure The supports are connected in series to...
- Q The armature coil of dynamo is rotating The generated induced emf varies and the number f magnetic lines of force also varies Which of ine following condition is correct 1...
- Q A solenoid of inductance L and resistance r is connected in parallel to a resistance R and a battery of emf E Initially the switch is closed for long time...
- Q Figure shows a conducting rod of negligible resistance that can side on smooth U shaped rail make of wire of resistance 1 22 m Position of the conducting rod at...
- Q Two concentric coplanar circular loops made of wire with resistance per unit length 10 4 m have diameters 0 2 m and 2m A time varying potential difference 4 2...
- Q 9 A 5 cm x 12 cm rectangular coil with number of 29 600 E turns 600 is placed in uniform magnetic field of strength 0 1 T The maximum...
- Q Consider a metal ball of radius r moving at a constant velocity v in a uniform magnetic field of induction B Assuming that the direction of velocity forms an angle...
- Q A magnetic field confined in a cylindrical region of radius R is changing at the rate of 4 T s A conducting rod PQ of length and resistance r is...
- Q A magnetic flux through a stationary loop with resistance R 5 0 varies during the time interval of 10 s as 41 10 t where t denotes time and all...
- Q 22 Identify the wrong statement a Eddy currents are always produced in a steady magnetic field b Eddy currents can be minimized by using laminated core c Induction furnace uses...
- Q Vs 29 V R1 17 0 R2 23 0 R3 25 0 L 140 mH C 15 mF Assuming that the initial current of the inductor is 0 A find...
- Q A uniform and constant magnetic field B is directed perpendicularly into the plane of the page everywhere within a rectangular region as shown in figure A wire circuit in the...
- Q A rectangular a square a circular and an elliptical loop all in the x y plane are moving out of a uniform magnetic field with a constant velocity V vi...
- Q xii In circuit shown in figure 5 149 if switches S and S are closed at t 0 find the oscillation frequency of charge in this circuit Neglect mutual induction...
- Q A thin semicircular conducting ring PQR of radius r is falling with its plane vertical in a horizontal magnetic field B as shown in figure The potential difference developed across...
- Q View In English A coil of inductance 300 mH and resistance 20 is connected to a source of voltage 2V What is the value of time at which current will...
- Q negligible resistance and it is connected to a spring of spring constant 0 5 Nm see figure The assembly is kept in a uniform magnetic field of 0 1 T...
- Q A rod of length 1m rotates about one of its end points with an angular velocity 2 rad sec in a plane perpendicular to the magnetic field B 2T as...
- Q Consider a monochromatic beam of 2 points wavelength 6000 incident normally on a scanning Fabry Perot interferometer with n2 1 and F 400 The distance between the two mirrors is...
- Q A 800 turn coil of effective area 0 05 m is kept perpendicular to a magnetic field 5 105 T When the plane of the coil is rotated by 90...
- Q Electromag 5 A magnet is pushed N pole first into a coil as in the diagram below Which one of the following statements A to E is not true A...
- Q A conducting rod ab of mass m can slide over two long frictionless conducting rails separated by distance The arrangement is kept in a uniform inward magnetic field B At...
- Q In a coil of resistance 100 2 a current is induced by changing the magnetic flux through it as shown in the figure The magnitude of change in flux through...
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