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  • (a) What is an electromagnet ? List any two uses. (b) Draw a labelled diagram to show how an electromagnet is made. (c) Sate the purpose of soft iron core used in making an electromagnet. (d) List two ways of increasing th

(a) What is an electromagnet ? List any two uses.

(b) Draw a labelled diagram to show how an electromagnet is made.

(c) Sate the purpose of soft iron core used in making an electromagnet.

(d) List two ways of increasing the strength of an electromagnet if the material of the electromagnet is fixed.

 

 

 

 
 
 
 
 

Answers (1)

a) A current carrying solenoid is called an electromageet /when soft iron is placed inside a solenoid carrying current, the soft iron piece behaves like a magnet so long as electric current passes through it. The magnet so formed is electromagnet.

Uses of an electromagnet : In electric motors, electric bells,

b) Below is the labelled diagram showing how an electromagnet is made- 


c) Soft iron core is used to increase the strength/power of the electro magnet.

d) ways of increasing the strength of an electromagnet if the material of the electromagnet is fixed are, 

 i) By increasing the current ii) By increasing the number of turns in the coil

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Safeer PP

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