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Question
The magnetic field inside a long straight solenoid-carrying current ______.
Options
is zero
decreases as we move towards its end
increases as we move towards its end
is the same at all points
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Solution
The magnetic field inside a long straight solenoid-carrying current is the same at all points.
Explanation:
The magnetic field inside the current-carrying solenoid is constant in magnitude and direction and acts along the axis of the solenoid.
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