Board Exams Class10: Physics Important Questions / Notes: Topic- Magnetic Effect of Current (2)

Board Exams Class10: Physics Important Questions / Notes: Topic- Magnetic Effect of Current (2) By Sanjit Sir

Topic : Magnetic field Due to a Current Carrying Conductor:

Magnetic field due to current through a straight conductor:

A current carrying straight conductor has magnetic field in the form of concentric circles; around it. Magnetic field of current carrying straight conductor can be shown by magnetic field lines.

The direction of magnetic field through a current carrying conductor depends upon the direction of flow of electric current. The direction of magnetic field gets reversed in case of a change in the direction of electric current.

Let a current carrying conductor be suspended vertically and the electric current is flowing from south to north. In this case, the direction of magnetic field will be anticlockwise. If the current is flowing from north to south, the direction of magnetic field will be clockwise.

Right Hand Thumb Rule:

maxwell’s corckscrew rule
The direction of magnetic field; in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule. It is also known as Maxwell’s Corkscrew Rule.

maxwell’s corckscrew rule
If a current carrying conductor is held by right hand; keeping the thumb straight and if the direction of electric current is in the direction of thumb, then the direction of wrapping of other fingers will show the direction of magnetic field.The magnetic effect of electric current is known as electromagnetic effect. It is observed that when a compass is brought near a current carrying conductor the needle of compass gets deflected because of flow of electricity.What is meant by magnetic effect of current?
How does a magnet affect electrical current?
Can electricity have a magnetic effect?
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