Q31 of 238 Page 83

The most suitable material for making the core of an electromagnet is:

soft iron is mostly used for making the core of the electromagnet.

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29

The direction of current in the coil at one end of an electromagnet is clockwise. This end of the electromagnet will be:

 30

If the direction of electric current in a solenoid when viewed from a particular end is anticlockwise, then this end of solenoid will be:

 32

The magnetic effect of current was discovered by:

 33

A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid: