State two ways by which the magnetic field of a solenoid can be made stronger.
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Solution
Magnetic field inside a solenoid is given by
B=μ0nI
where n is the number of turns per unit length
I is the current in the wire
Magnetic field of a solenoid can be made stronger by increasing (1) the strength of the current in the solenoid (2) the number of turns in the solenoid