Two parallel conductors A and B of equal lengths carry currents I and 10 I, respectively, in the same direction. Then ____.
A and B will repel each other with same force
A and B will attract each other with same force
A will attract B, but B will repel A
A and B will attract each other with different forces
/
A conductor in the form of a right angle ABC with AB = 3 cm and BC = 4 cm carries a current of 10 A. There is a uniform magnetic field of 5 T perpendiculars to the plane of the conductor. The force on the conductor is ____.
1.5 N
2.0 N
2.5 N
3.5 N
A rectangular coil has 100 turns and carries a current of 1 A. It is placed in a uniform magnetic field B =0.5 T with the direction of magnetic field parallel to the plane of the coil. The magnitude of the torque required to hold this coil in this position is ____.
Zero
200 N-m
2 N-m
10 N-m
In hydrogen atom, the electron is making around the nucleus in an orbit of radius 0.528 Å. The magnetic moment ____.
Three long, straight and parallel wires carrying currents are arranged as shown in the figure. The wire C which carries a current of 5.0 amps is so placed that it experiences no force. The distance of wire C from wire D is then ____.
9 cm
7 cm
5 cm
3 cm
A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards ____.
North
South
East
West
A straight wire of length 0.5 metre and carrying a current of 1.2 ampere placed in a uniform magnetic field of induction 2 Tesla. The magnetic field is perpendicular to the length of the wire. The force on the wire is ____.
2.4 N
1.2 N
3.0 N
2.0 N
A circular loop of area carrying a current of 10 A, is held perpendicular to a magnetic field of intensity 0.1T. The torque acting on the loop is ____.
Zero
0.01 N-m
0.001 N-m
0.8 N-m