What are the factors on which the magnetic field due to a current carrying solenoid depends?

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(N/A) The strength of the magnetic field produced by a current-carrying solenoid depends on the following factors:
$(a)$ The number of turns in the coil: The magnetic field is directly proportional to the number of turns $(N)$.
$(b)$ The strength of the current: The magnetic field is directly proportional to the current $(I)$ flowing through the solenoid.
$(c)$ The nature of the core material: The magnetic field is significantly increased when a soft iron core is placed inside the solenoid,as it acts as an electromagnet.

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