Physics
State a law, which determines the direction of magnetic field around a current carrying wire.
Electro-Magnetism
57 Likes
Answer
Right hand thumb rule is used to determine the direction of magnetic field around a current carrying wire.
Right hand thumb rule — If we hold the current carrying conductor in our right hand such that the thumb points in the direction of flow of current, then the fingers encircle the wire in the direction of the magnetic field lines.
In figure, the direction of current in the conductor XY is upwards (i.e., X to Y). The magnetic field lines are anticlockwise around the conductor.
Answered By
34 Likes
Related Questions
State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.
Name and state the rule by which the polarity at the ends of a current carrying solenoid is determined.
What will happen to a compass needle when the compass is placed below a wire and a current is made to flow through the wire? Give a reason to justify your answer.
The diagram in figure shows a small magnet placed near a solenoid AB with it's north pole N near the end A. Current is switched on in the solenoid by pressing the key K.
(a) State the polarity at the ends A and B.
(b) Will the magnet be attracted or repelled? Give a reason for your answer.