Question

List two distinguishing features between the magnetic fields produced by a bar magnet and a solenoid.

Answer 1

Sr. No.	Features	Solenoid	Bar magnet
1.	Strength	The magnetic field strength can be changed by varying the current.	The magnetic field strength is fixed and cannot be changed.
2.	Polarity	The polarity (North/South poles) can be reversed by changing the current direction.	The polarity is permanent and cannot be reversed.
3.	Nature	It produces a temporary magnetic field (only when current flows).	It produces a permanent magnetic field.