Physics question and answers for December 05, 2023
- Q A small bead of mass m and positive charge q is mounted on a fixed thin smooth horizontal plastic ring of radius R Att 0 bead is stationary Ring lies...
- Q A uniform magnetic field B Bot where Bo is a positive constant cylindrical volume of radius R then the potential difference in the conducting rod PQ due to electrostatic field...
- Q A U shaped wire of mass m and length is immersed with its two ends in mercury see figure The wire is in a homogeneous field of magnetic induction B...
- Q A uniform conducting ring of mass m 2 kg radius r 2m and resistance 8 2 is kept on smooth horizontal surface A time varying magnetic field B 1 t...
- Q 3 a 2 A current is flowing through the branch of a cube of side 1 m then choose incorrect statement 12A 12A 1 The magnetic force acting on a...
- Q VOGE A thin sheet of width 2a is placed in the x y plane between the lines x a and x a The sheet is very long in the y...
- Q A proton and an alpha particle enters in a uniform magnetic field with the same velocity The period of rotation of the a particle will be O four times that...
- Q 24 Find the magnetic field at P due to the arrangement shown 1 1 2 Hoi 2nd 2 0i 2 2nd 11 Hoi 3 nd
- Q T kg and radius of cross section 10cm carries a light coil C of 100 13 A uniform wooden bar of mass 100 turns The bar is smoothly pivoted at...
- Q 3 The force on a charged particle due to electric and magnetic fields is given by F qE qux B Suppose E is along the X axis and B along...
- Q 8 A triangular wire frame each side 2m is placed in a region of time variant magnetic field having dB dt 3 T s The magnetic field is perpendicular to...
- Q 6 A wire carrying current I has the shape as shown in adjoining figure Linear parts of the wire are very long and parallel to X axis while semicircular portion...
- Q Two small magnets each of magnetic moment 10 A m are placed in end on position 0 1 m apart from their centres The force acting between them is b...
- Q A straight rod of mass m and length L is suspended from the identical spring as shown in the figure spring stretched by a distance of xo due to the...
- Q 22 A conductor ABCDEF with each side of length L is bent as shown It is carrying a current I in a uniform magnetic induction B parallel to ve y...
- Q AL w 1 3 AL w X 3 X f X 0 X 1 BIR 3 IRB 4 21RB 74 A non conducting rod AB of length L has positive...
- Q A current I flows through a thin cylinder of radius R If the pressure exerted on the cylinder due to the flow of current will be Mo1 2k R 3...
- Q A current I enters a uniform circular coil of radius R branches into two parts and then recombines as shown in the circuit diagram The resultant magnetic field at the...
- Q A 250 Turn rectangular coil of length 2 1 cm and width 1 25 cm carries a current of 85 A and subjected to a magnetic field of strength 0...
- Q A metal rod of resistance R is fixed along a diameter of a conducting ring of radius r There is a magnetic field of magnitude B perpendicular to the plane...
- Q 4 1 4 A beam of electrons is accelerated through a potential difference V It is then passed normally through a uniform magnetic field where it moves in a circle...
- Q A long cylindrical conductor of radius R carries current such that current density J varies as distance from central axis of cylinder If magnetic field at a distance r R...
- Q Try 11 Find de al over following loops direction in which integration has to be performed its t by arrows i O 1 iv 1
- Q A thin ring of radius R metre has charge q coulomb uniformly spread on it The ring rotates about its axis w a constant frequency f revolution s The value...
- Q 1 0 5 henry 3 1 5 henry 2 15 henry 4 9 6 henry Two conducting coils are placed co axially now a cell is connected in one coil...
- Q 1 2 potential difference V flies through a uniform transverse magnetic field B The field occupies a region of space by width d If a be the angle of deviation...
- Q 17 A rod of length L and mass m is lying on a horizontal smooth table A magnetic field B is acting vertically upwards If a current I is passed...
- Q A charged particle enters a uniform magnetic field B at an angle B with speed v The angle at which the particle leaves the magnetic field is OB O2B 2...
- Q ELECTRIC FIELD A flat circular coil having N turns tightly wounD is placed in a time varying magnetic field B Bo sin oot The outer radius of the coil is...
- Q Example 5 17 A bar magnet of magnetic moment 2 0 A m is free to rotate about a vertical axis through its centre The magnet is released from rest...
- Q A wire carrying a current I has an arrangement as shown in the figure The magnetic induction at the centre will vanish when is R 50 1 x radians 3...
- Q conducting planes carrying current perpendicular to X axis and placed at d 0 and 2d 0 as shown in figure Current per unit width in both the planes is same...
- Q 31 light rod of length with two Wand q both of mass m are attached at its end is placed in a region of uniform electric field with intensity E...
- Q 2 Example 5 43 The magnetising field of 20 CGS units produces a flux of 2400 CGS units in a bar of iron of cross section 0 2 cm Calculate...
- Q c 40 A m If number of turns area and current through it is given by n A and i respectively then its magnetic moment will be a niA b...
- Q 2 x 10 s MG0263 A straight wire carries a current vertically upwards A point P lies to the east of it at a small distance and another point Q...
- Q 38 The figure shows a conducting ring of radius R A uniform steady magnetic field Blies perpendicular to the plane of the ring in a circular region of radius r...
- Q A magnetic dipole of dipole moment 10 i j k is placed in a magnetic field 0 61 0 4 0 sk force acting on the dipole is 1 i...
- Q ampere current is flowing through a long straight wire Due to this a field of 5 x 10 5 T produced then distance of the point from the axis of...
- Q A cylindrical conductor of radius R is carrying constant current The plot of the magnitude e the magnetic field B with the distance d from the centre of the conductor...
- Q A magnetic dipole M AI B J Wb is placed in magnetic field B Cx 1 Dy Wb in XY plane at El F m Then force experienced by the...
- Q 31 A long vertical wire carrying a current of 10 A in the upward direction is placed in a region where a horizontal magnetic field of magnitude 2 0 x...
- Q The magnetic dipole moment of current loop shown in figure is YA Semicircle ZE 1 12 7 12 8 2 12 1 8
- Q The figure shows three situations when an electron with a velocity v travels a uniform magnetic field B In each case what is the direction of magnetic force on the...
- Q Iwo thick wires and two thin wires all of the same material and same length form a square in three different ways A B and C as shown in the...
- Q Four rods each mass m and length are arranged in form of rectangle as shown in the figure The moment of inertia about perpendicular bisector of opposite sides is 1...
- Q A current is flowing in a vertical wire in downward direction the direction of magnetic field of a point which is just right side to the wire 1 towards north...
- Q A circular coil carrying a certain current produces a magnetic field B at its centre The coil is now rewound so as to have 3 turns and the same current...
- Q A point charge of 6 C is placed at a distance 20 cm directly above the centre of a square of side 40 cm The magnitude of the flux through...
- Q Current through the conductor PQ in the given diagram is 1m 202 1 2A from P to Q 3 4A from P to Q P 2m s B 2T 2...
- Q A long straight wire along z axis carries a current in the negative z direction The magnetic field vector B at a point having co ordinate x y in z...
- Q A square frame of side carries a current i The magnetic field at its centre is B The same current is passed through a circular coil having the same perimeter...
- Q A rod of length 1 1m and resistance R 100 is being pulled with a constant velocity of 4m s towards right At time 1 0 the rod is 1m...
- Q A uniform magnetic field of 0 5 gauss exists in a region A long straight wire carrying a current of 10A is placed in the region such that the direction...
- Q Figure shown two long straight wires carrying electric currents in opposite directions The separation between the wires is 5 0 cm Find the magnetic field at a point P midway...
- Q Matter Example 5 5 Figure 5 5 shows a small magnetised needle P placed at a point O The arrow shows the direction of its magnetic moment The other arrows...
- Q The magnetic field due to current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4 cm from centre is 54 T...
- Q 4 As shown in diagram a current carryin conductor is subjected to steady uniform magnetic field Then 1 Torque T 0 force F 0 2 Torque t 0 force F...
- Q agnetic eld of strength B perpendicular to its plane Radius of loop is r current in the loop is i and linear mass density of loop is m Speed of...
- Q 3 A wire bent into a regular polygon of n sides is inscribed in a circle of radius a If a current I passes through the wire and the polygon...
- Q of charge q and mass m enters a uniform magnetic field B at A with speed v at an angle a and leaves the field at C with speed v...
- Q 1 A massless square loop of side carrying current i is suspended from a pulley as shown in the arrangement Lower edge of the loop is in transverse magnetic field...
- Q Same current i 2A is flowing in a wire frame as shown in figure The frame is a combination of two equilateral triangles ACD and CDE of side 1m It...
- Q 0 A magnet is suspended in the magnetic meridia with an untwisted wire The upper end of wire rotated through 181 to deflect magnet by 3 from magnetic meridian Now...
- Q S spin angular momentum S and orbital angular momentum 1 associated with the intrinsic respectively of an electron are predicted by quantum theory and verified experimentally to a high accuracy...
- Q A particle of charge Q and of negligible initial speed is accelerated through a potential difference of U The particle reaches a region of uniform magnetic field of induction B...
- Q 9 Two long parallel metallic wires with a resistance R form a horizontal plane A conducting rod AB is on the wires shown in figure The space has magnetic field...
- Q A cyclotron is used to accelerate protons H Deuterons H and a particles He While exiting under similar conditions the minimum K E is gained by A proton B deuteron...
- Q 3 14 The magnetic field at the centre of a current carrying circular coil of radius 10 cm is 5 5 times the magnetic field at a point on its...
- Q Find force per unit length at P 5A C 10 cm P a 104 m c 3 x 104N m D b 10 Nm d 0 3 Nm A
- Q 12 Two similar loops of radius R are lying concentrically with their planes at right angles to each othe The currents flowing in them are and 3 respectively The magnetic...
- Q is projected from A in nonuniform magnetic field as shown in figure A B XID X 5x10 The magnitude of velocities at point A B and C respectively during the...
- Q Try Yourself 11 Find B al over following loops direction in which integration has to be performed is indicated by arrows 4 het b NV Curront Carrying Wire
- Q A large metal sheet carries an electric current along it surface Current per unit length is A Magnetic field nea the metal sheet is O O O O O ooooo...
- Q Two long fixed parallel thick rails are lying in a region having uniform magnetic field perpendicular to the plane of the rails Two identical sliders of mass m and resistance...
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