Magnetic Field Produced by Loops and Solenoids Video Lessons

Concept

# Problem: In which direction will each compass point when there is a large current in the direction shown?A) The magnetic field points to the right for compasses 1 and 2 and to the left for compass 3 in accordance with the right-hand rule for fields. B) The magnetic field points to the left for compass 1 and to the right for compasses 2 and 3 in accordance with the right-hand rule for fields. C) The magnetic field points to the right for compass 1 and to the left for compasses 2 and 3 in accordance with the right-hand rule for fields. D) The magnetic field points to the left for all three compasses in accordance with the right-hand rule for fields. E) The magnetic field points to the left for compasses 1 and 2 and to the right for compass 3 in accordance with the right-hand rule for fields. F) The magnetic field points to the right for all three compasses in accordance with the right-hand rule for fields.

###### FREE Expert Solution

The figure indicates that the current is entering the lower side and is leaving from the upper side in all the three compasses.

This shows that the current is moving upwards.

Using the right-hand thumb rule, we put the thumb of the right hand in the direction of the current then the fingers show the direction of the magnetic field.

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###### Problem Details

In which direction will each compass point when there is a large current in the direction shown?

A) The magnetic field points to the right for compasses 1 and 2 and to the left for compass 3 in accordance with the right-hand rule for fields.

B) The magnetic field points to the left for compass 1 and to the right for compasses 2 and 3 in accordance with the right-hand rule for fields.

C) The magnetic field points to the right for compass 1 and to the left for compasses 2 and 3 in accordance with the right-hand rule for fields.

D) The magnetic field points to the left for all three compasses in accordance with the right-hand rule for fields.

E) The magnetic field points to the left for compasses 1 and 2 and to the right for compass 3 in accordance with the right-hand rule for fields.

F) The magnetic field points to the right for all three compasses in accordance with the right-hand rule for fields.