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What people are asking?

Amarnathreddy M

Feb 1, 2014

Distinguish between self-induction and mutual induction.

This answer has an image. Please click on the question to read more.

Answer (3)

Letusknowwhy

Apr 23, 2014

What is Lenz's Law

This answer has an image. Please click on the question to read more.

Answer (2)

Mohammad Subhan

Jul 4, 2014

Lenz's law is in accordence with law of conservation of energy,As work done by an external force on the magnet is coverted into kinetic energy of magnet,then electrical energy and then finally into joule's heat energy.Since only energy transformation takes place and no enrgy is created or destroyed,hence law of energy is valid.

But if we assume the just oposite of lenz's law,for ex..when we move a bar magnet towards a conducting loop,assume that south polarity is developed towards north pole of magnet,and thus magnet will move by itself to the loop due to force of attraction and hence its kinetic energy is increasing.But in this case the work done by electromagnetic force on the bar magnet  is converted into kinetic energy,electrical energy and finally heat energy.In this case too, K.E of bar magnet is not created,it just formed by the transformation of work done by magnetic force into K.E.So why and how this case violates the LAW OF CONSERVATION OF ENERGY?

The law conservation of energy is always valid it never voilates. Please repost the question with more clarity.

Answer (1)

Adarsh Udayan

Dec 19, 2014

A circular conducting loop of radius r moves through a uniform magnetic field of induction vector B with uniform velocity vector v. The res..

potential difference between A and B is VBr

Answer (1)

Sanalkumar S

May 4, 2015

Which part of electromagnetic spectrum has largest penetrating power? 

Answer.

Gamma rays        

Answer (2)

Amarnathreddy M

Feb 1, 2014

Distinguish between self-induction and mutual induction.

This answer has an image. Please click on the question to read more.

Answer (1)

Fagunithareja

Aug 10, 2013

a transformer has 500 primary turns 10 secondary turns. if the secondaryt has resistive load of 15 ohm the currents in the primary secondary respectively are


No answers yet.Be the first to answer

Answer (0)

Adarsh Udayan

Dec 19, 2014

In the situation described in figure, the polarity of capacitor is A) B positive with respect to A B) A p..

B)  A positive with respect to B.

By the movement of the magnet, current will be clockwise as seen from the right side of the loop. So plate A will be positive and B negative.

Answer (1)

NextGurukul Guest User

Sep 27, 2017

Explain lenz law?

Answer.

Lenz's law is named after the German scientist H. F. E. Lenz in 1834. Lenz's law states that when an emf is generated by a change in magnetic flux according to Faraday's Law, ...

Answer (1)

Gajender

Dec 21, 2014

State Faradays laws of Electrolysis.

This answer has an image. Please click on the question to read more.

Answer (1)

Amarnathreddy M

Feb 1, 2014

Distinguish between self-induction and mutual induction.

This answer has an image. Please click on the question to read more.

Answer (3)

Letusknowwhy

Apr 23, 2014

What is Lenz's Law

This answer has an image. Please click on the question to read more.

Answer (2)

Mohammad Subhan

Jul 4, 2014

Lenz's law is in accordence with law of conservation of energy,As work done by an external force on the magnet is coverted into kinetic energy of magnet,then electrical energy and then finally into joule's heat energy.Since only energy transformation takes place and no enrgy is created or destroyed,hence law of energy is valid.

But if we assume the just oposite of lenz's law,for ex..when we move a bar magnet towards a conducting loop,assume that south polarity is developed towards north pole of magnet,and thus magnet will move by itself to the loop due to force of attraction and hence its kinetic energy is increasing.But in this case the work done by electromagnetic force on the bar magnet  is converted into kinetic energy,electrical energy and finally heat energy.In this case too, K.E of bar magnet is not created,it just formed by the transformation of work done by magnetic force into K.E.So why and how this case violates the LAW OF CONSERVATION OF ENERGY?

The law conservation of energy is always valid it never voilates. Please repost the question with more clarity.

Answer (1)

Adarsh Udayan

Dec 19, 2014

A circular conducting loop of radius r moves through a uniform magnetic field of induction vector B with uniform velocity vector v. The res..

potential difference between A and B is VBr

Answer (1)

Sanalkumar S

May 4, 2015

Which part of electromagnetic spectrum has largest penetrating power? 

Answer.

Gamma rays        

Answer (2)

Amarnathreddy M

Feb 1, 2014

Distinguish between self-induction and mutual induction.

This answer has an image. Please click on the question to read more.

Answer (1)

Fagunithareja

Aug 10, 2013

a transformer has 500 primary turns 10 secondary turns. if the secondaryt has resistive load of 15 ohm the currents in the primary secondary respectively are


No answers yet.Be the first to answer

Answer (0)

Adarsh Udayan

Dec 19, 2014

In the situation described in figure, the polarity of capacitor is A) B positive with respect to A B) A p..

B)  A positive with respect to B.

By the movement of the magnet, current will be clockwise as seen from the right side of the loop. So plate A will be positive and B negative.

Answer (1)

NextGurukul Guest User

Sep 27, 2017

Explain lenz law?

Answer.

Lenz's law is named after the German scientist H. F. E. Lenz in 1834. Lenz's law states that when an emf is generated by a change in magnetic flux according to Faraday's Law, ...

Answer (1)

Gajender

Dec 21, 2014

State Faradays laws of Electrolysis.

This answer has an image. Please click on the question to read more.

Answer (1)

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