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Which of the following statement concerning magnetic field is correct ?
(1) The part of a bar magnet, at which the magnetic field is the strongest, is called its pole.
(2) A magnetic field is present near a compass needle.
(3) There is no magnetic field inside a current-carrying solenoid.​
  • a)
    (1) and (2) only
  • b)
    (2) and (3) only
  • c)
    (2) only
  • d)
    (1) only 
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following statement concerning magnetic field is correct ...
Statement (1) is correct: A bar magnet has two poles - a north pole and a south pole. The magnetic field is strongest near these poles.
Statement (2) is also correct: A compass needle aligns itself with the Earth's magnetic field, and it points towards the Earth's magnetic north. This indicates the presence of a magnetic field around the Earth.
Statement (3) is incorrect: In fact, a current-carrying solenoid produces a strong magnetic field inside it. The direction of the magnetic field can be determined using the right-hand thumb rule.
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Most Upvoted Answer
Which of the following statement concerning magnetic field is correct ...
The correct answer is option 'A' - (1) and (2) only.

Explanation:
(1) The part of a bar magnet, at which the magnetic field is the strongest, is called its pole.
- This statement is correct. The magnetic field is strongest at the poles of a bar magnet. The north pole of the magnet has a magnetic field that points away from it, while the south pole has a magnetic field that points towards it. These magnetic fields are strongest at the poles.

(2) A magnetic field is present near a compass needle.
- This statement is also correct. A compass needle aligns itself with the Earth's magnetic field, indicating the presence of a magnetic field. The needle of a compass points towards the Earth's magnetic North Pole, which is near the geographic South Pole.

(3) There is no magnetic field inside a current-carrying solenoid.
- This statement is incorrect. A solenoid is a coil of wire wound in the shape of a cylinder. When an electric current flows through the solenoid, it generates a magnetic field inside the solenoid. The magnetic field lines form a pattern similar to that of a bar magnet, with the field being strongest inside the solenoid.

In conclusion, only statements (1) and (2) are correct, so the correct answer is option 'A' - (1) and (2) only.
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Which of the following statement concerning magnetic field is correct ?(1) The part of a bar magnet, at which the magnetic field is the strongest, is called its pole.(2) A magnetic field is present near a compass needle.(3) There is no magnetic field inside a current-carrying solenoid.a)(1) and (2) onlyb)(2) and (3) onlyc)(2) onlyd)(1) onlyCorrect answer is option 'A'. Can you explain this answer?
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