00. Biot-Savart's Law and Magnetic Field, Lorentz Force
Moving Charges & Magnetism

153283 In a circular coil (1) of radius R, current I is flowing and in another coil (2) or radius 2R a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-

1 1:1
2 1:2
3 2:1
4 3:1
Moving Charges & Magnetism

153284 A horizontal overhead power line carries acurrent of 90 A in east to west direction. Magnitude of magnetic field due to the current 1.5 m below the line is-

1 1.2 T
2 1.2×1010 T
3 0 T
4 1.2×105 T
Moving Charges & Magnetism

153285 Which of the following graphs shows the variation of magnetic field B, with distance from a long current carrying conductor?

1 a
2 b
3 c
4 d
Moving Charges & Magnetism

153283 In a circular coil (1) of radius R, current I is flowing and in another coil (2) or radius 2R a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-

1 1:1
2 1:2
3 2:1
4 3:1
Moving Charges & Magnetism

153284 A horizontal overhead power line carries acurrent of 90 A in east to west direction. Magnitude of magnetic field due to the current 1.5 m below the line is-

1 1.2 T
2 1.2×1010 T
3 0 T
4 1.2×105 T
Moving Charges & Magnetism

153285 Which of the following graphs shows the variation of magnetic field B, with distance from a long current carrying conductor?

1 a
2 b
3 c
4 d
Moving Charges & Magnetism

153286 The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 A m. The induction of magnetic field at a point mid way between the poles will be-

1 Zero
2 2×105 T
3 4×106 T
4 8×107 T
Moving Charges & Magnetism

153283 In a circular coil (1) of radius R, current I is flowing and in another coil (2) or radius 2R a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-

1 1:1
2 1:2
3 2:1
4 3:1
Moving Charges & Magnetism

153284 A horizontal overhead power line carries acurrent of 90 A in east to west direction. Magnitude of magnetic field due to the current 1.5 m below the line is-

1 1.2 T
2 1.2×1010 T
3 0 T
4 1.2×105 T
Moving Charges & Magnetism

153285 Which of the following graphs shows the variation of magnetic field B, with distance from a long current carrying conductor?

1 a
2 b
3 c
4 d
Moving Charges & Magnetism

153286 The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 A m. The induction of magnetic field at a point mid way between the poles will be-

1 Zero
2 2×105 T
3 4×106 T
4 8×107 T
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Moving Charges & Magnetism

153283 In a circular coil (1) of radius R, current I is flowing and in another coil (2) or radius 2R a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-

1 1:1
2 1:2
3 2:1
4 3:1
Moving Charges & Magnetism

153284 A horizontal overhead power line carries acurrent of 90 A in east to west direction. Magnitude of magnetic field due to the current 1.5 m below the line is-

1 1.2 T
2 1.2×1010 T
3 0 T
4 1.2×105 T
Moving Charges & Magnetism

153285 Which of the following graphs shows the variation of magnetic field B, with distance from a long current carrying conductor?

1 a
2 b
3 c
4 d
Moving Charges & Magnetism

153286 The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 A m. The induction of magnetic field at a point mid way between the poles will be-

1 Zero
2 2×105 T
3 4×106 T
4 8×107 T