The magnetic field strength inside a current carrying solenoid is:

Correct option is B

The correct answer is (b) uniform and non – zero.

The magnetic field strength inside a long, current-carrying solenoid is the same at all points. This is because the magnetic field lines are parallel and equidistant, making the magnetic field uniform.

Information Booster:

The magnetic field strength inside a solenoid is determined by the following formula: B = μ0nI 

• B: is the magnetic field strengthμ0: is the permeability of free space, which is a constant
• n: is the number of turns per unit length of the solenoid
• I: is the current flowing through the solenoid
• The strength of the magnetic field inside a solenoid can be increased by: Increasing the number of turns of the coil Placing soft iron inside the solenoid.