Question

Which of the following statements is false regarding a current carrying solenoid?

• A. The magnetic field strength of a solenoid can be altered.
• B. Using soft iron as core in a solenoid increases its magnetic field strength.
• C. The magnetic field produced by a current carrying solenoid is not similar to a bar magnet.
• D. The polarity of a solenoid can be changed.

Answer 1

The correct option is C The magnetic field produced by a current carrying solenoid is not similar to a bar magnet.

A current carrying solenoid behaves like a bar magnet with fixed polarities at its ends. The magnetic field generated by a current carrying solenoid is similar to a bar magnet. The polarity of a solenoid can be reversed by changing the direction of current. The field strength due to a solenoid can be changed by changing the electric current or changing number of turns per unit length.