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What is the magnetic field outside a solenoid?

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in Basic Electrical Engineering by (88.7k points)
What is the magnetic field outside a solenoid?

(a) Infinity

(b) Half the value of the field inside

(c) Double the value of the field inside

(d) Zero

The question was posed to me during an online exam.

The above asked question is from Magnetic Field in section Electromagnetism of Basic Electrical Engineering

1 Answer

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Best answer
Right option is (d) Zero

To explain I would say: There are no magnetic lines of force outside a solenoid, hence the magnetic field outside a solenoid is zero.

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