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Asked by R murali

Jul 5, 2014

A current through a horizontal power line flows in east to west direction. What is the direction of magnetic field at a point directly below and at a point directly above it.

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Answer (2)

Asked by Vivek Tripathi

Jul 14, 2015

What is the function of earth wire ?Why is it neccssary to earth the metalic body of electric appliances

Answer.

The main function of the earth wire is to prevent live wire from overloading and absorbs the excess electrons & flows to beneath the ground . It is necessar...

Answer (2)

Asked by Narasimha mn

Aug 10, 2013

Name the two devices which work on the principle of electromagnetic induction

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Answer (6)

Asked by karan Sharma

Aug 31, 2013

 
How does a magnetic compass needle deflect in the following situations?
i.  If we Place a straight current carrying wire (the direction of the flow current is from north to south) such that the wire is placed over a compass needle such that the wire is parallel to the compass needle,

ii.  If we Place a straight current carrying wire (the direction of the flow current is from south to north) such that the wire is placed below a compass needle such that the wire is parallel to the compass needle,

iii.  If we Place a straight current carrying wire (the direction of the flow current is from south to north) such that the wire is placed over a compass needle such that the wire is parallel to the compass needle

iv.  If we Place a straight current carrying wire (the direction of the flow current is from north to south) such that the wire is placed below a compass needle such that the wire is parallel to the compass needle,
 

 
How does a magnetic compass needle deflect in the following situations?
  1. If we Place a straight current carrying wire (the direction of the flow cur...

Answer (1)

Asked by R murali

Jul 5, 2014

What is difference between Permanent magnet and electromagnet?

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Answer (1)

Asked by Ria

Jun 15, 2015

WHY A FUSE IS ALWAYS CONNECTED IN LIVE WIRE AND NOT IN NEUTRAL WIRE?

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Answer (1)

Asked by Hajra Ansari

Jul 31, 2015

a) Mention the factors on which the direction of force experienced by a current carrying conductor placed in a magnetic feild depend.
b) Under what condition is the force experienced by a current carrying conductor placed in a magnetic feild maximum?
c) A proton beam is moving along the direction of a magnetic field. What force is acting on the proton beam?

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Answer (1)

Asked by Letusknowwhy

Apr 16, 2014

What are factors on which the strength of induced current depends?

1-magnetic field 2-no of turns 3-relative motion

Answer (2)

Asked by Ashish

Nov 30, 2014

Why does a current carrying conductor experiences a force when it is placed in a magnetic field?

When a current-carrying conductor is placed in a magnetic field the wire experiences a force due to the interaction between the field and the magnetic field produced by the moving charges in the wire.

Answer (2)

Asked by R murali

Jul 5, 2014


  1. What is solenoid? Draw field lines of magnetic field through and around a current carrying conductor


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