Physics question and answers for December 06, 2023
- Q The drawing shows a wire composed of three segments AB BC and CD There is a current of 1 9 A in the wire There is also a magnetic field...
- Q 21 A circular ring of radius 1m is placed in a dB varying magnetic field 2T s The potentia dt difference between P and Q is where ZPOQ 90 P...
- Q t 7 Figure 4 128 shows a wire AB of mass m rough inclined plane of inclination a and static friction coefficient u The wire carries a current I Find...
- Q Physics C JEE Advanced A uniform magnetic field of 1 5 T exists in a cylindrical region of radius 10 0 cm it s direction being parallel to the axis...
- Q 2 A cylindrical conductor of radius a has a hole of radius b bored parallel to and centred a distance d from the cylinder axis d b a The current...
- Q 75 A long straight wire along the Z axis carries a current I in the negative z direction The magnetic vector field B at a point having coordinates x y...
- Q The figure shows a closed loop bent in the form of a semi circle One bead having charge q slides from A to B along the diameter in uniform motion...
- Q A magnet is made to oscillate with a particular frequency through a coil as shown in figure The time variation of magnitude of emf generated across the coil during half...
- Q When a plate of magnetic material of size 10 cm x 0 5 cm 0 2 length breadth and thickness respectively is located magnetizing field of 0 5 10 Am...
- Q Magnetic field at point P due to finite length wire in C G S units B 71 50a 51 136a 171 13a 171 5a 12 cm 90 Amp 12a 5...
- Q electric 54 Two equal currents are flowing perpendicular to each other as shown in the figure AB and CD are perpendicular to each and other C B D symmetrically placed...
- Q A thin insulated wire forms a plane spiral of N 100 tight turns carrying a current I 8 mA The radii of inside and outside turns see adjacent figure are...
- Q 5 54 A current flows through a rectangular conductor in the presence of uniform magnetic field B pointing out in Z direction as shown in figure 5 275 The potential...
- Q 11 A paramagnetic substance in the form of a cube with sides 1 cm has a magnetic dipole moment of 20 x 10 J T when a magnetic intensity of...
- Q A coil of wire having finite inductance and resistance has a conducting ring placed coaxially within it The coil is connected to a battery at time t 0 so that...
- Q Iwo ends of an inductor of inductance L are connected to two parallel conducting wires A rod of length and mass m is given velocity v as shown in figure...
- Q A vertical wire carries a current of 6 0A What is the Magnetic field at a 20 mm and b 40 mm from the wire 4 An electron moving at...
- Q In the operating room anesthesiologists use mass spectrometers to monitor the respiratory gases of patients undergoing surgery One gas that is often monitored is the anesthetic isoflurane molecular mass 3...
- Q 42 An infinitely long current carrying wire and a small current carrying loop are in the plane of the paper as shown The radius of the loop is a and...
- Q 4 28 Two identical wires each of length L are bent to form a circular loop and a square loop If the same current i flows in the two wires...
- Q place Two similar magnets of magnetic moments M and M are taken and vibrated in a vibration magnetometer with their a Unlike poles together b Like poles together respectively The...
- Q A metal sheet placed in magnetic field which changes from zero to maximum If figure showns direction of eddy currents then direction of magnetic field is W N S E...
- Q nducting wire ABC has a mass of 10 g A current of 2 A flows through it The wire is kept in a uniform magnetic field B 2 T The...
- Q A hollow tube is carrying an electric current along the length distributed uniformly over its surface The magnetic field O O O O increases linearly from the axis to the...
- Q The current density Jinside a long solid cylindrical wire of radius a 5 30 mm varies with radial distance r from centre the according to J Jor2 a where Jo...
- Q long straight wire carries a current TU i in A 2 sin oot sin cut 3 maximum value of magnetic field produced by the 7 wire at a distance m...
- Q 4 14 The configuration of some current carrying wires is shown in figure 4 217 All straight wires are very long Both AB and CD are arcs of the same...
- Q Which of the following is not true in case of motion of a charged particle which is proje perpendicularly in a magnetic field 1 its kinetic energy remains constant 3...
- Q A small conducting rod of length moves with a uniform velocity XXXXXB v in a uniform magnetic field B XX xx as shown in figure A The end X of...
- Q a particle 2 An electron is projected horizontally with a kinetic energy of 10 keV A magnetic field of strength 1 0 10 7 T exists in the vertically upward...
- Q 3x y Find the force Question 15 A wire having current 3A is lying is x y plane along curve in Newton acting on wire due to uniform magnetic field...
- Q Two straight infinitely long wires are fixed in space so that the current in the 2 left wire is 2 A and directed out of the plane of the page...
- Q Q 4 Long thin wires 1 2 and 3 are all parallel to the z axis Wire 1 carries current I into the xy plane and crosses the xy plane...
- Q A wire carrying a 30 0 A current passes between the poles of a strong magnet that is perpendicular to its field and experiences a 2 16 N force on...
- Q Q 5 A long cylindrical conductor carries a current of 2 Amperes Its radius is 2 cm The magnitude of the magnetic field on the surface of the conductor is...
- Q Electromagnetic induction 18 1 mark B T wire A wire is moved through a magnetic field sweeping an area of 0 140 m in a time of 67 0 milliseconds...
- Q A solenoid 4cm in diameter and 20cm in length has 250 turns and carries a current of 15A Calculate the flux through the surface of a disc of 10cm radius...
- Q A coil 2 0 cm in diameter has 300 turns If the coil carries a current of 10 mA and lies in a magnetic field 5 x 10 2 T...
- Q 4 17 The radius of a coil of wire with N turns is 0 22m and 3 5A current flows clockwise in the coil as shown A long straight wire...
- Q 6 A wire is bent into a rectangular loop of width 2L and height L as shown in Figure If L 10 centimeters and the wire carries a current 15...
- Q 5 The magnetic field dB due to a small current element dl at a distance r and element carrying current i is a dB Ho 4 Vector form of Biot...
- Q A cylindrical bar magnet is rotated about its axis Figure given alongside A wire is connected from the axis and is made to touch the cylindrical surface through a contact...
- Q Ho where xis the distance from the dipole If we replace pm and 1 in the above expression we obtain the result for B for a point in the plane...
- Q Q 24 A circular coil of one turn is formed by a 6 28m length wire The magnetic field at the centre of coil is 2 T Then current in...
- Q A magnet is kept fixed with its length parallel to the magnetic meridian An identical magnet is parallel to this such that its center lies on perpendicular bisector of both...
- Q carrying current 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 radius R is...
- Q magnetic field of 3 57 x 10 2 T If the value of elm is 1 76 x 10 1 C kg the frequency of revolution of the electron is...
- Q 1 10 cm 2 20 cm A straight wire carries current in vertical upward direction A point P lies just east of it at a small distance and another point...
- Q A short magnet of moment 6 75 A m produces neutral points on its axis If the horizontal component of earth s magnetic field 5 x 10 5 Wb m...
- Q A particle with a specific charges s is fired with a speed v towards a wall at a distance d perpendicular to the wall What minimum magnetic field must exist...
- Q 2 A piece of wire carrying a current of 6 00 A is bent i the form of a circular arc of radius 10 0 cm and subtends an angle...
- Q A particle of charge per unit massa is released from origin with a velocity voi in a uniform magnetic field B Bok If the particle passes through 0 y 0...
- Q Current in the coil I 18 A The magnitude of the magnetic field a B H 21 B 10 x 2x16x RX 20 0 16 O is towards right i...
- Q its applications and at last the chapter will are discussed in detail so it will be more interesting to understand and torque between two parallel conductors All the topics carefully...
- Q 4 A singly ionized q e organic molecules with mass Mo 115 u is accelerated through an electrostatic potential V and enters the region with uniform magnetic field B directed...
- Q 166 An electron is moving in a field of induction 21 2j T with a velocity of 5 x 10 J ms The force acting on the electron is 1...
- Q Two identical particles having the same mass m and charges q and q separated by a distance d enter in a uniform magnetic field B directed perpendicular to paper inwards...
- Q D 90 In the figure shown there are two semicircles of redii r and r in which a current I is flowing The magnetic induction at the centre O will...
- Q 3 Two long straight wires are placed along x axis and y axis They carry current and 12 respectively The equation of locus of zero magnetic induction in the magnetic...
- Q Illustration 6 a particle is moving along x axis in x y plane with velocity of 10 m s A magnetic field of magnitude is present in the region along...
- Q 3 AD BP C F The magnetic field of earth at the equator is approximately 4x10 T The radius of earth is 6 4x100 m Then the dipole moment of...
- Q to the current 1 5 m below the Two identical conducting wires AOB and COD are placed at right angles to each other The wire AOB carries an electric current...
- Q 4r Two circular coils X and Y have equal number of turn and carry equal currents in the same sense and subtend same solid angle at point O If the...
- Q Hysteresis loops for two magnetic materials A and B are given below B B F H H A B These materials are used to make magnets for electric generators transformer...
- Q A coil of wire having inductance and resistance has a conducting ring placed coaxially within it The coil is connected to a battery at time t 0 so that a...
- Q Two identical wires A and B each of length e carry the same current I Wire A is bent into a circle of radius R and wire B is bent...
- Q A magnetic needle of magnetic moment 6 7 x 10 Am and moment of inertia 7 5 10 6 kg m is performing simple harmonic oscillations in a magnetic field...
- Q 3 urrent i is moving in a hexagon shaped loop of side length a Find expression for magnetic field at centre hexagon 1 2 Hoi 1 a 4 3 oi...
- Q The vertical component of earth s magnetic field at a place is 75 of the horizontal component The value of angle of dip at that place is NCERT Pg 187...
- Q A particle of mass m and charge q moving with velocity qBl in the figure Region Il has a uniform magnetic field B perpendicular to the plane of paper The...
- Q 11 Find 8 di over following loops direction in which integration has to be performed is indicated by arrows 101 0 II Oi 12 iv 1 O
- Q used needle a point O The arrow shows the direction of its magnetic moment The other arrows show different positions and orientations of the magnetic moment of another identical magnetised...
- Q 3 A wire of length 1 carrying a current I along the Y direction is kept in a magnetic field given by B j k T The magnitude of B...
- Q 2 Two point charges qA 3 Cand qB 3 C are located 20 cm apart in vacuum a What is the electric field at the midpoint O of the line...
- Q A straight current carrying wire is placed along the axis of a current carrying loop then force between them is 1 Repulsive 3 Zero 2 Attractive 4 Cannot be prediotod
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