Question 10
The strength of magnetic field inside a long current carrying straight solenoid is

(a) more at the ends than at the centre
(b) minimum in the middle
(c) same at all points
(d) found to increase from one end to the other

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Solution

Option (c) is correct.
The magnetic field is the same at all points inside the long solenoid. The magnetic field inside a long straight current - carrying solenoid is uniform which is represented by parallel lines.

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Similar questions

The magnetic field inside a long straight solenoid carrying current :

(a) is zero

(b) decreases as we move towards its end.

(d) is the same at all points.

Question 3
Choose the correct option.
The magnetic field inside a long straight solenoid-carrying current
(a) is zero
(b) decreases as we move towards its end
(c) increases as we move towards its end
(d) is the same at all points

The magnetic field inside a long straight solenoid carrying current is the same at all points.

Q. Question 4
For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is

(a) The field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at all points inside the solenoid
(b) The strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil
(c) The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet
(d) The N- and S-poles exchange position when the direction of current through the solenoid is reversed

Q. Assertion :The magnetic field at the ends of a very long current carrying solenoid is half of that at the centre. Reason: If the solenoid is sufficiently long, the field within it is uniform.

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Electromagnets

Standard VII Physics

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Question 10 The strength of magnetic field inside a long current carrying straight solenoid is (a) more at the ends than at the centre (b) minimum in the middle (c) same at all points (d) found to increase from one end to the other

Option (c) is correct. The magnetic field is the same at all points inside the long solenoid. The magnetic field inside a long straight current - carrying solenoid is uniform which is represented by parallel lines.

Question 10
The strength of magnetic field inside a long current carrying straight solenoid is

(a) more at the ends than at the centre
(b) minimum in the middle
(c) same at all points
(d) found to increase from one end to the other

Option (c) is correct.
The magnetic field is the same at all points inside the long solenoid. The magnetic field inside a long straight current - carrying solenoid is uniform which is represented by parallel lines.