Q2 of 29 Page 282

See fig. Q-2, magnetic lines are shown. What is the direction of the current flowing through the wire?

According to the Right-Hand Thumb Rule. If we curl our fingers in the direction of the magnetic field lines than the thumb gives the direction of the flow of current.

In the above figure, the direction of magnetic field is anticlockwise Thus by curling our fingers in the anticlockwise direction the thumb points upwards. Therefore, the direction of the current is upwards. The figure below illustrates the same.



More from this chapter

All 29 →
1

Are the magnetic field lines closed? Explain.

 3

A bar magnet with the North Pole facing towards a coil moves as shown in fig. Q-3. What happens to the magnetic flux passing through the coil?

 4

A coil is kept perpendicular to the page. At P, current flows into the page and at Q it comes out of the page as shown in figure Q-4. What is the direction of magnetic field due to the coil?

 5

The direction of current in a coil is shown in fig.Q.5. What type of magnetic pole as formed at the face that has a flow of current as shown in fig.Q-5?