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Magnetic Properties Free Doubts and Solutions

CBSE - XII Science - Physics - Magnetism and Matter

Help me solve..
 

Asked by pksunilnair 5th December 2017, 7:00 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Name of a magnet whose two poles are not directly opposite to each other?

Asked by vasturushi 14th July 2017, 8:12 PM
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CBSE - XII Science - Physics - Magnetism and Matter

What is Tangent Galvanometer? Explain briefly.
 
What are the possible conceptual questions from the chapter Magnetism & Matter?

Asked by debjyotisaha98 22nd August 2015, 12:11 PM
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CBSE - XII Science - Physics - Magnetism and Matter

You have two similar magnets, judge which one is stronger without using another magnet.

Asked by Topperlearning User 1st June 2015, 3:32 PM
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CBSE - XII Science - Physics - Magnetism and Matter

The susceptibility of a magnetic material is -2.6 x 10-5. Identify the type of magnetic meterial and state its two properties. 

Asked by Topperlearning User 1st June 2015, 3:29 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Define magnetic susceptibility of a material. Name two elements, one having positive susceptibility and the other having negative susceptibility. What does negative susceptibility signify?

Asked by Topperlearning User 1st June 2015, 3:26 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Why should the material used for making permanent magnets have high coercivity?

Asked by Topperlearning User 1st June 2015, 2:16 PM
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CBSE - XII Science - Physics - Magnetism and Matter

The permeability of a magnetic material is 0.9983. Name the type of magnetic materials it represents.

Asked by Topperlearning User 1st June 2015, 2:08 PM
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CBSE - XII Science - Physics - Magnetism and Matter

The given figure shows a two wire concentric semi-circular loop carrying current I. O is the common centre of the semi-circles. What is the direction of the magnetic field at the centre O?

Asked by Topperlearning User 1st June 2015, 1:40 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Suppose we have a magnetic needle of length 2l with magnetic moment ‘M’ and pole strength ‘m’. We divide it into two pieces from the middle. What will be the magnetic moment and pole strength of the resultant pieces?

Asked by Topperlearning User 1st June 2015, 1:29 PM
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CBSE - XII Science - Physics - Magnetism and Matter

The susceptibility of a magnetic material is -0.080.What is the type of material.

Asked by Topperlearning User 1st June 2015, 1:25 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Why do we prefer steel or alnico for making permanent magnets?

Asked by Topperlearning User 1st June 2015, 1:24 PM
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CBSE - XII Science - Physics - Magnetism and Matter

What is Hysteresis Loop? What is its significance?

Asked by Topperlearning User 21st May 2015, 1:53 PM
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CBSE - XII Science - Physics - Magnetism and Matter

What is Curie Temperature?

Asked by Topperlearning User 21st May 2015, 1:51 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Discuss briefly the characteristic of diamagnetic, paramagnetic and ferromagnetic materials. Also, give some examples of the three magnetic materials.

Asked by Topperlearning User 21st May 2015, 1:50 PM
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CBSE - XII Science - Physics - Magnetism and Matter

What is the c.g.s unit of magnetic induction and magnetic intensity?

Asked by Topperlearning User 21st May 2015, 1:49 PM
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CBSE - XII Science - Physics - Magnetism and Matter

In the given figure, two points p and Q are located at distance r and r' respectively from a bar magnet. Assume that the distance r is much greater than the length of the magnet. If r = 2r', then what is the ratio of magnitude of magnetic fields at P and Q?

Asked by Topperlearning User 21st May 2015, 1:24 PM
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CBSE - XII Science - Physics - Magnetism and Matter

 a cyclotron is not suitable to accelarate electrons why?

Asked by Sourav Jha 16th February 2015, 9:58 AM
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CBSE - XII Science - Physics - Magnetism and Matter

THE DECLINATION AT A PLACE IS 20 DEGREE WEST IN WHAT DIRECTION SHIP BE STEEREDSO THAT IT REACHS GEOGRAPHIC  NORTH EAST

Asked by Sandeep Yadav 7th February 2015, 6:09 PM
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CBSE - XII Science - Physics - Magnetism and Matter

THE HORIZONTAL COMPONENT OF EARTH MEGNETIC FEILD IS 0.2 G  AND TOTAL MEGNETIC FIELD IS 0.4GFIND THE ANGLE OF DIP
 

Asked by Sandeep Yadav 7th February 2015, 5:59 PM
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CBSE - XII Science - Physics - Magnetism and Matter

how histerisis curve is useful in deciding particular type of magnets required for transformers etc?

Asked by Potam Mahesh 8th October 2014, 9:09 PM
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CBSE - XII Science - Physics - Magnetism and Matter

Mam..,
I'd like to know y does a paramagnetic sample display greater magnetisation (for the same mag.field ) when cooled and the reason for diamagnetism to be almost independent of temperature.

Asked by MAANASI.M 13th September 2014, 10:58 PM
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CBSE - XII Science - Physics - Magnetism and Matter

where can i find  all the video lessons of the chapter magnetism and matter of class 12th physics? i am not able to fin video lesson on the topic hysterisis loop of that particular chapter.. 

Asked by Karishma 29th August 2014, 1:27 AM
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CBSE - XII Science - Physics - Magnetism and Matter

Why do the north pole of the magnet is more powerful than the south pole of the magnet? 
 
why do the suspended  magnet always align in the north-south direction? 

Asked by Pandurangarao 31st July 2014, 8:11 PM
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CBSE - XII Science - Physics - Magnetism and Matter

A short bar magnet placed with its axis at 30 degrees with a uniform magnetic field of 0.35 T. A torque of 0.055 J is experienced by the magnet. Find the magnetic moment.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Physics - Magnetism and Matter

A magnetic needle with magnetic moment 3.8 X 10-2 JT-1 is placed at 30o with the uniform magnetic field. Suppose a torque of 6.8 X 10-4 J acts on it, then, find the magnetic field.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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