Question

State two ways by which the magnetic field of a solenoid can be made stronger.

Answer 1

Magnetic field inside a solenoid is given by

$B={\mu }_{0}nI$

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