When a compass needle settles down in a magnetic field, _______. the needle aligns itself with the field, the south end of the c
ompass needle pointing in the direction of the field the axis of the needle is perpendicular to the field the needle aligns itself with the field, the north end of the compass needle pointing in the direction of the field where the needle points depends upon how the compass case is oriented
1 answer:
Answer:
The needle aligns itself with the field, the north end of the compass needle pointing in the direction of the field.
Explanation:
When the current flows through the coil, magnetic field is generated. When the compass is placed in the field, the needle aligns itself along the field. The north of the compass points in the direction of the field.
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Answer:
E=
Explanation:
We are given that
Charge on ring= Q
Radius of ring=a
We have to find the magnitude of electric filed on the axis at distance a from the ring's center.
We know that the electric field at distance x from the center of ring of radius R is given by
Substitute x=a and R=a
Then, we get
Where K=
Hence, the magnitude of the electric filed due to charged ring on the axis of ring at distance a from the ring's center=