Q:- Temporary magnets are used in which of the following?

Posted on

1. Loud speakers. 

2. Generators. 

3. Motors. 

4. All of these. 

Hints :- 

Permanent magnets lose their power after some days. So, if we use permanent magnet in those equipment, then it does not give efficient output. But, the above mentioned equipment’s have to work efficiently at all time. That is why the temporary magnets (or) the electromagnets are used in the above mentioned machines.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.