Question

Imagine the left wall of your room to be the North Pole of a magnet and the right wall to be the South Pole. If an electron is projected from the floor to the ceiling , in which direction would we see it bending towards ?

Answer 1

Every magnet has both a north and a south pole. ... When magnets are used in magnetic therapy, the poles are often referred to as being positive or negative. Generally, the south pole is termed positive, and the north negative.

Answer 2

The electron will bend towards the front wall

Explanation:

• The left wall is the North Pole and right wall is South Pole

• Therefore, the magnetic field will be from North to South

• Thus, it will be from left wall to right wall

• The electron is projected upwards

• Thus, its velocity will be in upward direction

• We know that a force acting on charge q with velocity v on a magnetic field B is given by

• $\vec F=q(\vec v\times \vec B)$

• Thus, in cross product of v and B the direction of the force will be perpendicular to both v and B

• i.e. it will be in the direction of the front wall

• Thus, the electron will bend towards the front wall

Hope this answer is helpful.

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