Physics question and answers for November 30, 2023
- Q There are two circular coils of equal areas and equal magnetic flux through them The resistances of the coils are in the ratio 1 2 If the magnetic flux through...
- Q A conducting rod of length 25 cm is free to slide on two parallel conducting bars as shown in the figure In addition two resistors 592 and 1092 are connected...
- Q The magnitude of emf induced in a 2 mH inductor in which the current changes from 8 A to 6 A in 10 3 second is 2 x 10 6...
- Q In the circuit shown in the figure switch S is closed at t 0 Then which of the following statements is WRONG Given R L 20 A Initial current through...
- Q A rod is rotating with a constant angular velocity w about point O its cnetre in a magnetic field B as shown Which of the following figure correctly shows the...
- Q A current carrying loop is dropped from the position as shown in figure The loop starts entering into a region of uniform magnet field directed into the plane Which of...
- Q coil of inductance 0 2H and 192 resistance is connected to 90V source At what rate does the current in the coil grow at the instant the oil is connected...
- Q 5 16 A voltage source delivers 4A when the load connected is 502 and 2A when the load is 2002 what 50 and power transfer is the maximum power it...
- Q 9 7 A series RC circuit with R 102 has an impedance with an angle of 45 at fi 500 Hz Find the fre quency for which the magnitude of...
- Q 5 The primary and secondary coils of a transformer have 150 and 50 turns respectively If the magnetic flux linked with the primary coil is given by o 30t where...
- Q 3 9 A passive network contains resistors a 70 mH inductor and a 25 F capacitor Obtain respective 100 s domain impedances for a driving voltage a v cos 300t...
- Q A circular coil of radius 1 cm and 15 turns is rotated in a uniform magnetic field of 0 5 T with constant angular velocity of 300 rad s about...
- Q Two conducting sphere of radius R are placed at a large distance from each other They are connected by a coil of inductance L as shown in the figure Neglect...
- Q 2 7 A series circuit with R 2 52 L 2 mH and C 500 F has a current which increases lin early from zero to 10 A in the...
- Q 39 A metallic rod of length lis hinged at the point M and is rotating about an axis perpendicular to the plane of paper with a constant angular velocity o...
- Q In a uniform magnetic field of induction B a wire in the form of a circle of radius r rotates about the diameter of the circle with angular frequency w...
- Q A ring of radiusir is spun about its axis with an angular velocity w in a horizontal plane A uniform magnetic field of magnitude 8 exists in the region in...
- Q In the figure shown a conducting rod of length 1 resistance R and mass m can move vertically downward due to gravity Other components are fixed Inward uniform magnetic field...
- Q transverse magnetic field as shown in the figure Dimensions of various sections of the frame are shown Some points are marked on the frame C Choose the correct alternative X...
- Q magnetic field is 5 T at a point which is 2R distance away from the axis of wire Magnetic field at a point R which is distance inside from the...
- Q A circular loop of area A and resistance R rotates with an angular velocity about diameter Initially the plane of the loop is perpendicular to the magnetic field B The...
- Q DIRECTION OF INDUCED MAGNETIC FIELD i t Charging of capacitor 01 Q t Q t Anticlockwise both outside and between the plates Discharging of capacitor HOH Q t Q t...
- Q 6 15 points Consider the same layout in Figure 3 The long straight wire passes through the center of the circular wire with radius R a 5 points Calculate the...
- Q a Explain Faraday s two Laws 2 c A 220 Volt shunt motor takes a current of 20 Amps If the shunt field resistance is 150 22 and armature resistance...
- Q B infinite C indeterminable as values are not given D None of the above Ans A 0 89 A cube of side 1 meter is placed in a uniform magnetic...
- Q Current lo is flowing through a bent wire a b c d in z x plane as shown in figure then B de over the loop PQRS lying in the...
- Q Induced Electric Field Motional emf in a straight conductor Effective length concept 3 A rod of length is rotating about an axis at distance from one end as shown in...
- Q Q 14 The end points of a uniform conducting rod slide on the two mutually perpendicular non conducting surfaces in a uniform magnetic field as shown If velocity of end...
- Q The figure shows part of a bigger circuit The capacity of the capacitor is 6 F and decreasing at the constant rate 0 5 F s The potential difference across...
- Q circular loop of radius 0 3cm lies parallel to much bigger circular of radius 20 cm The centre of the small loop is on the axis of the bigger loop...
- Q A flat coil C of turns area A and resistance R is place in a uniform magnetic field of magnitude B The plane o the coil is initially perpendicular to...
- Q 5 If magnetic flux is varying through a conducting loop as o 2t weber then at what time magnitude of induced emf in the loop will be 2 V 1...
- Q 6 If the rod PQ rotates with angular speed about its mid point M and magnetic field B is out of the plane of motion then emf induced between ends...
- Q At the threshold of detection an FM receiver can pick a signal for which Eo 2 V m The intensity of the electromagnetic wave is A 5 31 x 10...
- Q A magnet is dropped with its north pole towards a closed circular coil placed on a table then a looking from above the induced current in the coil will be...
- Q Consider a circuit in which a coil having inductance of 0 02H and resistance of 50 connected across 200V 50Hz supply in series with a resistance of 50 Considering all...
- Q A 2nd order system with m 1 kg k 39 48 N m and c 2 5 is excited by the input signal x t If the x t is...
- Q The magnetic flux in a coil of 100 turns increases by 12 x 103 Maxwell in 0 2 s due to the motion of a magnet The emf induced in...
- Q The expression for the induced e m f contains a negative sign e d dt What is t significance of the negative sign The induced e m f is produced...
- Q Two parallel long resistance less rails are joined at ends by a resistance R A slider with zero resistance of mass m length f has been imparted a velocity Vo...
- Q If R and L are resistance and inductance of choke coil and f is the frequency of current throug it then average power of the choke coil proportional to 1...
- Q When the two magnets are moved perpend to plane of coil as shown then N B A S emf is induced Induced current flows from A to B along coil...
- Q 4 X 1 In the circuit resistance of voltmeter is 6KQ then find its reading Question Type Single Correct Type 1 6V 2 5V C 2KQ2 wwwww English Mark for...
- Q A wave is described by y x t 0 4 sin 3x 19t where x is in meters y is in centimeters and t is in seconds At time t...
- Q 5 35 When a choke coil carrying a steady current is short circuited the current in it decreases to 1 times its initial value in a time T The time...
- Q A square frame of resistance en 2 0 and side a 20 cm and a long straight infinite wire carrying a current I 10 amp are located in the same...
- Q In order to have low power loss during transmission the power factor should be O High O Low O NI min 2
- Q Two discs of radii R and 2R are moving with velocities and 2v in opposite directions on a conducting platform as shown in the figure If magnetic field B is...
- Q Paragraph for below question The current through an inductor is given as i 2 4t A where t is time in second The magnitude of induced emf in the inductor...
- Q in cylindrical region of T radius R There is a circular conducting ring of radius a is kept at distance Sa center te center distance Choose the correct options 5a...
- Q 1 Poin Q 12 In any industry it is having three phase 440V 50Hz ac supply and carrying some electrical equipments for working on machine In a manager room there...
- Q 2 A galvanometer has a resistance of 20 a current of 2 mA gives full scale deflection The necessary resistance to convert this galvanometer into voltmeter of range 0 3...
- Q 86 For given arrangement in horizontal plane the possible direction of magnetic field I Induced current 1 towards right 3 vertically upward V 2 towards left 4 vertically
- Q Two metal strips of length each are placed parallel to each other in contact with an electric circuit as shown in Fig 9 218 The entire structure is placed on...
- Q Using the circular plates a capacitor of area 200 m and capacitance of 50 pF is created The capacitor is then charged to by an 80 V battery through a...
- Q ASSAGE 230V de shunt motor takes 51 A current at full load Motor has armature resistance and field winding resistance of 0 1 ohm and 230 ohm respectively By using...
- Q 5 A metallic wheel of radius and 8 spokes is rotated in a uniform magnetic field B as shown The motional EMF across centre and rim is given by B...
- Q 0 A straight conducting rod of length I and mass m is suspended in a horizontal plane by a pair of flexible strings in a magnetic field of magnitude B...
- Q Assuming an induction motor which is working at supply frequency of 50 Hz ac supply and having 6 poles The slip of induction motor at no load is 3 and...
- Q A 6 pole induction motor is working on three phase 50 Hz AC supply at no load and at full load When it runs at no load it has slip...
- Q The end points of a uniform conducting rod slide on the two mutually perpendicular non conducting surfaces in a uniform magnetic field as shown If velocity of end A is...
- Q Bo B Wb m 9 Atkr t s 9 A particle of mass m and charge q is at rest at a point a 0 0 of a coordinate system...
- Q 2 Charged particles are beamed into a region having a uniform electric field of 10 Newton Coulomb and a uniform magnetic field of 10 Newton ampere meter The electric and...
- Q A plane loop is shaped in the form as shown in the figure with radii a 20 cm and b 10 cm and is placed in a unifor time varying...
- Q b Find the current passing through x 1 0 y z 2 and A conducting circular loop of radius 20 cm lies in the z 0 plane in a magnetic...
- Q A conductor of length I moves in xy plane with a velocity v 21 31 m s in a magnetic field B 1 j k T The induced emf along...
- Q 03 The figure shows a conducting ring of radius R A uniform steady magnetic field B lies perpendicular to the plane of the ring in a circular region of radius...
- Q If a fraction of a solid disc s kinetic energy is rotational when it is rolling without slipping on fix surface then find the value of 21a Answer 0 01...
- Q Find the magnetic energy stored by a 4 50 mH inductor when the current through it is 13 0 A Part 1 Give the equation used for finding the magnetic...
- Q imple pendulum of mass m length I and charge q suspended in the tric field produced by two conducting parallel plates as shown The value of ection of pendulum in...
- Q 50 Current in the long straight wire is decreasing with time The induced current in loop 1 and 2 are 2 1 Clockwise in loop 1 as well as in...
- Q A solenoid of inductance 100 mH and resistance 4 20 2 is connected to a cell of emf 10 V at t 0 If the energy stored in the inductor...
- Q A coil of area 100 cm is kept at an angle of 30 with a magnetic field of 10 1 T The magnetic field is reduced to zero in 10...
- Q he horizontal component of earth s magnetic field at a certain location is 2 6 X 10 T and points notional emf appears in 0 80 m vertical radio antenna...
- Q 4 A circular loop is lying inside a magnetic field B as shown in figure At 0 it starts moving out of fiel 2a with constant speed v E m...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!