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Question
A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to:
A. hold the sheet there if it is magnetic.
B. hold the sheet there if it is non-magnetic.
C. move the sheet away from the pole with uniform velocity if it is conducting.
D. move the sheet away from the pole with uniform velocity if it is both, non-conducting and non-polar.
Choose the correct statement(s) from the options given below:
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EnglishSimilar Questions
- 1)A wire carrying current I, bent as shown in the figure, is placed in a uniform field B that emerges normally out from the plane of the figure. The force on this wire is _____________.
Fill in the blank with the correct answer from the options given below. - 2)Magnetic moment of a thin bar magnet is ‘M’. If it is bent into a semicircular form, its new magnetic moment will be ___________.
Fill in the blank with the correct answer from the options given below. - 3)Ferromagnetic material used in Transformer must have ___________.
Fill in the blank with the correct answer from the options given below. - 4)Three magnetic materials are listed below
(A) paramagnetics
(B) diamagnetics
(C) ferromagnetics
Choose the correct order of the materials in order of magnetic susceptibility. - 5)
Which of the following rules is used to determine the direction of the force on a currentcarrying conductor in an electric motor?
- 6)
Consider the following statements about magnetic field due to a current-carrying solenoid:
(a) The magnetic field inside the solenoid is in the form of parallel straight lines.
(b)The strong magnetic field produced inside the solenoid can be used to magnetise a piece of a magnetic material.
Which of the above statements is/are correct? - 7)
Consider the following statements about magnetic field due to a bar magnet:
(a) The field lines inside a bar magnet are directed from its south pole to the north pole.
(b) The magnetic field lines exist only outside the bar magnet.
Which of the above statements is/are correct?
- 8)
Two coils, A and B, such that A is connected to a battery through a key and B is connected to a galvanometer, are arranged parallel and close to each other. During which of the following duration will the phenomenon of electromagnetic induction be observed?
(a) Two minutes after closing the key.
(b) During the interval the key is taken out.
- 9)
Consider the following statements about magnetic field due to a current-carrying solenoid:
(a) The magnetic field is uniform inside the solenoid.
(b) One end of the solenoid behaves like the north pole and the other like the south pole of a bar magnet.
Which of the above statements is/are correct?
- 10)
Consider the following statements about magnetic field due to a current-carrying straight conductor:
The direction of the south pole of a compass needle at a point gives the direction of the magnetic field at that point.
The direction of the magnetic field lines gets reversed if the direction of the current in the conductor is reversed.
Which of the above statements is/are correct?
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Similar Questions
- 1)A wire carrying current I, bent as shown in the figure, is placed in a uniform field B that emerges normally out from the plane of the figure. The force on this wire is _____________.
Fill in the blank with the correct answer from the options given below. - 2)Magnetic moment of a thin bar magnet is ‘M’. If it is bent into a semicircular form, its new magnetic moment will be ___________.
Fill in the blank with the correct answer from the options given below. - 3)Ferromagnetic material used in Transformer must have ___________.
Fill in the blank with the correct answer from the options given below. - 4)Three magnetic materials are listed below
(A) paramagnetics
(B) diamagnetics
(C) ferromagnetics
Choose the correct order of the materials in order of magnetic susceptibility. - 5)
Which of the following rules is used to determine the direction of the force on a currentcarrying conductor in an electric motor?
- 6)
Consider the following statements about magnetic field due to a current-carrying solenoid:
(a) The magnetic field inside the solenoid is in the form of parallel straight lines.
(b)The strong magnetic field produced inside the solenoid can be used to magnetise a piece of a magnetic material.
Which of the above statements is/are correct? - 7)
Consider the following statements about magnetic field due to a bar magnet:
(a) The field lines inside a bar magnet are directed from its south pole to the north pole.
(b) The magnetic field lines exist only outside the bar magnet.
Which of the above statements is/are correct?
- 8)
Two coils, A and B, such that A is connected to a battery through a key and B is connected to a galvanometer, are arranged parallel and close to each other. During which of the following duration will the phenomenon of electromagnetic induction be observed?
(a) Two minutes after closing the key.
(b) During the interval the key is taken out.
- 9)
Consider the following statements about magnetic field due to a current-carrying solenoid:
(a) The magnetic field is uniform inside the solenoid.
(b) One end of the solenoid behaves like the north pole and the other like the south pole of a bar magnet.
Which of the above statements is/are correct?
- 10)
Consider the following statements about magnetic field due to a current-carrying straight conductor:
The direction of the south pole of a compass needle at a point gives the direction of the magnetic field at that point.
The direction of the magnetic field lines gets reversed if the direction of the current in the conductor is reversed.
Which of the above statements is/are correct?