Question

give the direction of a magnetic field in the following cases... fast!!

Answer 1

Answer:

1. Into the plane of paper
2. Into the plane of paper
3. Out of the plane of paper
4. Out of the plane of paper
5. Into the plane of paper
6. Out of the plane of paper
7. Out of the plane of paper
8. Into the plane of paper
9. Vertically upwards in the axial line passing through centre of the loop
10. Vertically downwards in the axial line passing through centre of the loop
11. Towards the left in the axial line passing through centre of the loop
12. Towards the right in the axial line passing throught centre of the loop

Explanation:

For cases from (1) to (8), we use right hand thumb rule

In these cases, place your right hand in such a way that the thumb shows direction of current then, thumbs curls in the direction of magnetic field

For cases from (9) to (12), we use the same rule but

place your right hand in such a way that curling fingers shows the direction of current in the loop then, thumb shows direction of magnetic field