(a) What is a magnetic field? How can the direction of magnetic field lines at a place be determined?
(b) State the rule for the direction of the magnetic field produced around a current-carrying conductor. Draw a sketch of the pattern of field lines due to a current flowing through a straight conductor.
Answers
Answer:
The direction of magnetic field lines at a place can be determined by using a compass needle. A compass needle placed near a magnet gets deflected due to the magnetic force exerted by the magnet. The north end of the needle of the compass indicates the direction of magnetic field at the point where it is placed.The magnetic fields are the imaginary line which moves from south to north.this lines do not overlap each other. we can find the direction of the magnetic field lines by keeping a compass near to it.
Explanation:
Right hand thumb rule: If the current carrying conductor is held in the right hand such that the thumb points in the direction of the current, then the direction of the curl of the fingers will give the direction of the magnetic field.The rule to find the direction of the magnetic field lines is the right hand thumb rule.
For this, clench the right hand and stretch out the thumb. The thumb indicates the direction of flow of current and the fingers curled show the direction of magnetic field lines. ( from base to tip)
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Answer:
(a) Magnetic field : it is defined as the space surrounding the magnet in which magnetic force can be experienced.The direction of magnetic field at a place can be determined by using a compass needle. A compass needle need place near a magnet gets deflected due to the magnetic force exerted by the magnet. The north an the needle of the compass indicates the direction of magnetic field at the point where it is placed.
(b) The magnetic field lines is directed from north pole to South pole outside the magnet and South pole to North pole inside the magnet.
