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.

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Solution

(d) is the same at all points

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

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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. Assertion: Magnetic field inside a solenoid is in straight lines but while coming out of a solenoid, they diverge and move far apart.

Reason: The magnetic field is maximum inside a solenoid and starts to decrease as we move away from the solenoid.

Q. 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

From above fromula we can say, magnetic field due to a current carrying toroidal solenoid is independent of its radius.The magnetic field at the ends of a solenoid is

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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.

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

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.

(d) is the same at all points

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