Moving Charges and Magnetism questions
775 published questions with worked solutions.
- A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic...
- A closely wound solenoid 80 cm long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 1.8 cm. If the...
- A solenoid of length 50 cm and a radius of cross-section 1 cm has 1000 turns of wire wound over it. If the current carried is 5...
- The magnitude of the magnetic field inside a long solenoid is increased by
- A solenoid has length 0.4 cm, radius 1 cm and 400 turns of wire. If a current of 5 A is passed through this solenoid, what is the...
- There are 50 turns of a wire in every cm length of a long solenoid. If 4 A current is flowing in the solenoid. The approximate...
- A toroid of core of inner radius 0.25 m and outer radius 0.26 m around which 3500 turns of a wire are wound. If the current in...
- Two toroids 1 and 2 have total number of turns 200 and 100 respectively with average radii 40 cm and 20 cm, respectively. If they...
- Two parallel wires carrying currents in the same direction attract each other because of
- Two parallel conductors A and B of equal length carry currents i and 10i respectively, in the opposite direction, then
- Two long conductors separated by a distance d carry currents i_1 and i_2 in the same direction. They exert a force F on each...
- In two parallel wires A and B, 10 A and 2 A current respectively, is flowing in opposite directions. The distance between the...
- The force between two long parallel wires A and B carrying current is 0.004 N ,m^ -1 . The conductors are 0.01 m apart. If the...
- A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend on
- Current i is carried in a wire of length L. If the wire is turned into a circular coil, the maximum magnitude of torque in a...
- A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If...
- Equal current i is flowing in three infinitely long wires along positive x, y and z-directions. The magnetic field at a point...
- Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the...
- A magnetic field 4 10^ -3 k T exerts a force (4 i+3 j) 10^ -10 N on a particle having a charge 10^ -9 C and going on the...
- A charge q is moving with a velocity v_1=1 i m/s at a point in a magnetic field and experiences a force F=q(- j+ k) N. If the...
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