It is magnet made by using electric current. An electromagnet works on the principal of magnetic effect of the current. Wrap a wire around a soft iron piece (known as the core). A magnet made using such an arrangement is called an electromagnet. A solenoid is a device which can be used as an electromagnet.
It is made of a long wire that has been wound many times (usually around a hollow metallic core). It has the shape of a long cylinder.
The more the number of turns of wire around the core the more will be the magnetic effect. The iron nail attracts more number of safety pins when wrapped with a coil with more number of turns. If the current passing through the coil is switched off then the iron piece will lose its magnetic effect, i.e., it will stop behaving like a magnet such magnet are called temporary magnets because they behave as a magnet as long as electricity flows through them.
A substance consisting of a coil wire with an iron core and is only magnetized when an electric current flows through it is called __________________.
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Right Option : B | |||
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The branch of physics which deals with the magnetism produced due to electric current is called ___________________ | |||
Right Option : B | |||
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A magnet made passing an electric current through a wire wrapped around a soft iron piece is called an _______________. | |||
Right Option : A | |||
View Explanation |
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
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In terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Abhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
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My experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
We started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Third consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
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Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Usually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.