153283
In a circular coil (1) of radius , current is flowing and in another coil (2) or radius a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-
1
2
3
4
Explanation:
A As we know that, Magnetic field in a circular coil, Given that, and Ratio of magnetic field,
BCECE-2014
Moving Charges & Magnetism
153284
A horizontal overhead power line carries acurrent of in east to west direction. Magnitude of magnetic field due to the current below the line is-
1
2
3
4
Explanation:
D Given that, Magnitude of magnetic field at a distance due to straight current carrying conductor is given by-
BCECE-2014
Moving Charges & Magnetism
153285
Which of the following graphs shows the variation of magnetic field , with distance from a long current carrying conductor?
1 a
2 b
3 c
4 d
Explanation:
C Magnetic field due to long current carrying conductor at a distance is- So, the graph between the magnetic field and the distance is-
COMEDK 2015
Moving Charges & Magnetism
153286
The distance between the poles of a horse shoe magnet is and its pole strength is . The induction of magnetic field at a point mid way between the poles will be-
1 Zero
2
3
4
Explanation:
D Given, Pole strength A-m Net magnetic field at midpoint , Where, Magnitude of magnetic field due to Pole Magnitude of magnetic field due to pole.
153283
In a circular coil (1) of radius , current is flowing and in another coil (2) or radius a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-
1
2
3
4
Explanation:
A As we know that, Magnetic field in a circular coil, Given that, and Ratio of magnetic field,
BCECE-2014
Moving Charges & Magnetism
153284
A horizontal overhead power line carries acurrent of in east to west direction. Magnitude of magnetic field due to the current below the line is-
1
2
3
4
Explanation:
D Given that, Magnitude of magnetic field at a distance due to straight current carrying conductor is given by-
BCECE-2014
Moving Charges & Magnetism
153285
Which of the following graphs shows the variation of magnetic field , with distance from a long current carrying conductor?
1 a
2 b
3 c
4 d
Explanation:
C Magnetic field due to long current carrying conductor at a distance is- So, the graph between the magnetic field and the distance is-
COMEDK 2015
Moving Charges & Magnetism
153286
The distance between the poles of a horse shoe magnet is and its pole strength is . The induction of magnetic field at a point mid way between the poles will be-
1 Zero
2
3
4
Explanation:
D Given, Pole strength A-m Net magnetic field at midpoint , Where, Magnitude of magnetic field due to Pole Magnitude of magnetic field due to pole.
153283
In a circular coil (1) of radius , current is flowing and in another coil (2) or radius a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-
1
2
3
4
Explanation:
A As we know that, Magnetic field in a circular coil, Given that, and Ratio of magnetic field,
BCECE-2014
Moving Charges & Magnetism
153284
A horizontal overhead power line carries acurrent of in east to west direction. Magnitude of magnetic field due to the current below the line is-
1
2
3
4
Explanation:
D Given that, Magnitude of magnetic field at a distance due to straight current carrying conductor is given by-
BCECE-2014
Moving Charges & Magnetism
153285
Which of the following graphs shows the variation of magnetic field , with distance from a long current carrying conductor?
1 a
2 b
3 c
4 d
Explanation:
C Magnetic field due to long current carrying conductor at a distance is- So, the graph between the magnetic field and the distance is-
COMEDK 2015
Moving Charges & Magnetism
153286
The distance between the poles of a horse shoe magnet is and its pole strength is . The induction of magnetic field at a point mid way between the poles will be-
1 Zero
2
3
4
Explanation:
D Given, Pole strength A-m Net magnetic field at midpoint , Where, Magnitude of magnetic field due to Pole Magnitude of magnetic field due to pole.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Moving Charges & Magnetism
153283
In a circular coil (1) of radius , current is flowing and in another coil (2) or radius a current 2I is flowing, then the ratio of the magnetic fields produced by the two coils is-
1
2
3
4
Explanation:
A As we know that, Magnetic field in a circular coil, Given that, and Ratio of magnetic field,
BCECE-2014
Moving Charges & Magnetism
153284
A horizontal overhead power line carries acurrent of in east to west direction. Magnitude of magnetic field due to the current below the line is-
1
2
3
4
Explanation:
D Given that, Magnitude of magnetic field at a distance due to straight current carrying conductor is given by-
BCECE-2014
Moving Charges & Magnetism
153285
Which of the following graphs shows the variation of magnetic field , with distance from a long current carrying conductor?
1 a
2 b
3 c
4 d
Explanation:
C Magnetic field due to long current carrying conductor at a distance is- So, the graph between the magnetic field and the distance is-
COMEDK 2015
Moving Charges & Magnetism
153286
The distance between the poles of a horse shoe magnet is and its pole strength is . The induction of magnetic field at a point mid way between the poles will be-
1 Zero
2
3
4
Explanation:
D Given, Pole strength A-m Net magnetic field at midpoint , Where, Magnitude of magnetic field due to Pole Magnitude of magnetic field due to pole.