Physics question and answers for December 09, 2023
- Q of earth s a 3 9 x 107 tesla c 8 0 x 10 tesla b 3 9 x 10 tesla d 7 0 x 107 tesla 3 A long...
- Q 66 A ring of mean radius 15 cm has 3500 turns of wire wound on a ferromagnetic core of relative permeability 800 The magnetic field in the core for a...
- Q Kh 3H For the tangent galvanometer when tana a is the angle of the compass with respect to the earth magnetic field Be S N versus the current in the...
- Q 63 A domain in ferromagnetic iron in the form of cube is having 5 x 100 atoms If the side length of this domain is 1 5 um and each...
- Q c 3 93 Nm A dipole of magnetic moment m 30j A m is placed along the y axis in a uniform magnetic field B 21 5 T The torque...
- Q 110 36 A magnetic dipole is under the influence of two magnetic fields The angle between the field directions is 60 and one of the fields has a magnitude of...
- Q B A circular coil of magnetic moment 0 355 IT te with its plane normal to an external field of magnitude 5 0 x 10 T The coil is free...
- Q c 3 5 Nm 29 The torque required to hold a small circular col of 10 turns area 1 mm and carrying a curren 21 of A in the middle...
- Q 9 A long straight hollow conductor tube carrying a current has two sections A and C of unequal cross section joined by a conical section B 1 2 and 3...
- Q 2 The magnitude of the equatorial magnetic field due to a bar magnet of length 2 cm at a distance of 1 m from its mid point is magnetic moment...
- Q Two identical bar magnets are fixed with their centres at a distance d apart A stationary charge is placed at P in between the gap of the two magnets at...
- Q 3 What is the magnitude of axial field due to a bar magnet of length 3 cm at a distance of 75 cm from its mid point if its magnetic...
- Q A conducting ring of circular cross section with inner and outer radii a and b is made out of a material of resistivity p The thickness of the ring is...
- Q Two students are investigating electromagnets and collect the data found in the table below in a classroom experiment Magnetic field strength T 250 500 755 1 250 2 505 of...
- Q A solenoid has a core of material with relative permeability 200 The windings of the solenoid are insulated from the core and carry a current of 4 A If the...
- Q 7 A circular coil of 70 turns and radius 5 cm carrying a current of 8 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1 5...
- Q 5 In a moving coil galvanometer the deflection 0 the scale by a pointer attached to the spring is N a NA kB b KAB NAB c d NAB kl
- Q P and Q are two long wires which carry 4 A current each along the positive z direction out of the page in the figure P is located at x...
- Q A proton of mass m charge q enters a magnetic field B with a velocity v at an angle 0 with the direction of B The radius of the resulting...
- Q 4 14 Two straight parallel conductors are spaced 50cm apart and carry oppositely directed currents the first 20A the second 24A A point P is separated from the first conductor...
- Q c d 1 2 x 10 5 N repulsive 5 A long straight wire carrying current of 30 A rests on a table Another wire AB of length 1 m...
- Q 4 mtG Objective NCERT P THE SOLENOID AND THE TOROID 55 A solenoid of length 0 6 m has a radius of 2 cm a is made up of 600...
- Q 56 A solenoid of length 50 cm having 100 turns carries a current of 2 5 A The magnetic field at one end the solenoid is a 3 14 x...
- Q A current I 2A flows in a circuit having the shape of isosceles trapezium The ratio of the bases of the trapezium is 2 Find the magnetic induction B at...
- Q 47 A4 A current carrying loop consists of three identical quarter circles of radius 5 cm lying in the positive quadrants of the x y y z and z x...
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