Question

The figure below shows an insulated wire. Which of the following condition is used to determine the shape of the magnetic field around the insulated wire?

• A. Depends upon the type of the wire.
• B. Depends upon the shape of the wire.
• C. Depends upon the number of turns in the wire.
• D. Depend upon the strength of the magnetic field.

Answer 1

The correct option is B Depends upon the shape of the wire.

The shape of the magnetic field depends upon the shape of the insulated wire which is wrapped around the soft iron core in an electromagnet. The direction of the magnetic field lines of force around a conductor is given by Maxwell’s right-hand thumb rule or the right-hand cork screw rule.