Question

"After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons in various directions and by recording the following observations: Electrons moving upward feel a magnetic force in the northwest direction. Electrons moving horizontally toward the north are pushed downward. Electrons moving horizontally toward the southeast are pushed upward. Mr. Spock therefore concludes that the magnetic field at this landing site is in which direction?"

Answer 1

south west direction

Step-by-step explanation:

check the attached file below

Answer 2

The landing site is in the southwest direction.

Step-by-step explanation:

The direction of current is opposite to that of direction of motion of electrons. This is the reason why electrons are regarded as negative. Based on this, we know the conventional current direction.

Now, Fleming's left hand rule states that whenever a current carrying conductor is placed inside a magnetic field, a force acts on the conductor, in a direction perpendicular to both the directions of the current and the magnetic field.

A wire with conventional current horizontally north west is pushed upwards.

Use Fleming'sleft hand rule. This shows the field, or a component of the field, acts south west.

Based on Mr. Spock's observations about electrons and using the Fleming's left hand rule, he can conlcude that the landing site is in the southwest direction.