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Question 1. Asked on :13 August 2020:06:09:35 PM

What is natural magnet?

-Added by Shruti Srivastva Physics » Magnetism

Question 2. Asked on :13 August 2020:06:09:14 PM

What is magnet?

-Added by Shruti Srivastva Physics » Magnetism

Question 3. Asked on :13 August 2020:06:06:05 PM

Mention 1 characterstics properties of the material suitable for making core of a transformer.

-Added by Shruti Srivastva Physics » Magnetism

Answer:

High intial permeability.

-Answered by Shruti Srivastva On 13 August 2020:06:07:58 PM

Question 4. Asked on :13 August 2020:06:02:44 PM

How does the magnetic permeability µ, differ for dia, para and feromagnetic materials?

-Added by Shruti Srivastva Physics » Magnetism

Answer:

For diamagnetic, µ, <1

For paramagnetic, μ, > 1

For ferromagnetic substances, μ, >>1

-Answered by Shruti Srivastva On 13 August 2020:06:04:06 PM

Question 5. Asked on :13 August 2020:06:01:10 PM

Give example of permanent magnet.

-Added by Shruti Srivastva Physics » Magnetism

Answer:

cobalt and steel.

-Answered by Shruti Srivastva On 13 August 2020:06:01:53 PM

Question 6. Asked on :13 August 2020:05:59:01 PM

What are permanent magnet?

-Added by Shruti Srivastva Physics » Magnetism

Answer:

The substance which at room tempreature retain their ferromagnetism for a long time are called permanent magnet.

-Answered by Shruti Srivastva On 13 August 2020:05:59:41 PM

Question 7. Asked on :13 August 2020:05:56:10 PM

Suggest two methods to destroy the magnetism of a magnet.

-Added by Shruti Srivastva Physics » Magnetism

Answer:

(i) By heating the magnet.

(ii) By applying magnetic field in the reverse direction. 

-Answered by Shruti Srivastva On 13 August 2020:05:57:18 PM

Question 8. Asked on :13 August 2020:05:54:03 PM

Name two magnetic material commonly used for making permanent magnets.

-Added by Shruti Srivastva Physics » Magnetism

Answer:

Cobalt steel and Alnico.

-Answered by Shruti Srivastva On 13 August 2020:05:55:10 PM

Question 9. Asked on :13 August 2020:05:52:12 PM

Name two alloys commonly used for making cores of transormers.

-Added by Shruti Srivastva Physics » Magnetism

Answer:

Mu-metal and Pu-metal.

-Answered by Shruti Srivastva On 13 August 2020:05:53:27 PM

Question 10. Asked on :13 August 2020:05:51:01 PM

What is the basic use of hyteresis curve?

-Added by Shruti Srivastva Physics » Magnetism


 

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