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What happens to the magnetic field in the solenoid when the length of the solenoid increases?

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in Basic Electrical Engineering by (88.7k points)
What happens to the magnetic field in the solenoid when the length of the solenoid increases?

(a) Increases

(b) Decreases

(c) Remains constant

(d) Becomes zero

The question was asked in exam.

Question is taken from Magnetic Field of a Solenoid in section Electromagnetism of Basic Electrical Engineering

1 Answer

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Best answer
The correct answer is (b) Decreases

To explain: The magnetic field of a solenoid is inversely proportional to the length. Hence as the length increases, the magnetic field decreases.

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