Question

The strength of magnetic field inside a long current carrying straight solenoid is

Options

• more at the ends than at the centre

• minimum in the middle

• same at all points

• found to increase from one end to the other

Answer 1

same at all points

Explanation - 

Inside the solenoid, magnetic field lines are parallel to each other hence forming a uniform field strength which indicates that the magnetic field is the same at all points inside the solenoid.