Question

ame the poles of the
AI 30. (a) Magnetic field lines of two bar magnets A and B are as shown below. Name the pole
magnets facing each other.
A.
•
В
.
(b) Two magnetic field lines never intersect each other. Why?
(c) How does the strength of the magnetic field at the centre of a current carrying circular coil depera
on the
(i) Radius of the coil,
(ii) Number of turns in the coil, and
(iii) Strength of the current flowing in the coil ?
​

Answer 1

MAGNETIC FIELD IN A MAGNET TRAVELS FROM NORTH POLE TO SOUTH POLE OUTSIDE THE MAGNET WHILE IT TRAVELS FROM SOUTH TO NORTH INSIDE THE MAGNET...

TWO MAGNETIC FIELD LINES DO NOT INTERSECT BECAUSE IF THEY DO SO THE COMPASS WILL POINT OUT AT TWO DIRECTIONS AT A SAME TIME WHICH IS NIT POSSIBLE.

THE STRENGTH OF MAGNETIC FIELD LINES DEPENDS ON RELATIVE CLOSENESS OF THE MAGNETIC FIELD LINES SO THE MORE CLOSER ARE THE MAGNETIC FIELD LINES ,THE MORE THAY HAVE STRENGTH.

THE STRENGTH OF MAGNETIC FIELD LINES DEPEND ON NUMBER OF TURNS IN THE COIL ,AMOUNT OF CURRENT FLOWING AND THE CORE MATERIAL .

THE STRENGTH OF MAGNETIC FIELD IS INVERSELY PROPORTIONAL TO RADIUS

Answer 2

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MAGNETIC FIELD IN A MAGNET TRAVELS FROM NORTH POLE TO SOUTH POLE OUTSIDE THE MAGNET WHILE IT TRAVELS FROM SOUTH TO NORTH INSIDE THE MAGNET...

TWO MAGNETIC FIELD LINES DO NOT INTERSECT BECAUSE IF THEY DO SO THE COMPASS WILL POINT OUT AT TWO DIRECTIONS AT A SAME TIME WHICH IS NIT POSSIBLE.

THE STRENGTH OF MAGNETIC FIELD LINES DEPENDS ON RELATIVE CLOSENESS OF THE MAGNETIC FIELD LINES SO THE MORE CLOSER ARE THE MAGNETIC FIELD LINES ,THE MORE THAY HAVE STRENGTH.

THE STRENGTH OF MAGNETIC FIELD LINES DEPEND ON NUMBER OF TURNS IN THE COIL ,AMOUNT OF CURRENT FLOWING AND THE CORE MATERIAL .

THE STRENGTH OF MAGNETIC FIELD IS INVERSELY PROPORTIONAL TO RADIUS