Question

A uniform magnetic field is directed vertically upwards. In which direction in this field

forces an particle (+ve charged) be projected to that it is deflected southward? Name and

state the rule you have to use to find the direction in this force.
Can you use Fleming's left hand rule for this?​

Answer 1

Answer:

Fleming's Left hand Rule is used in this situation.

Holding the three mutually perpendicular fingers of Left Hand, we get the following:

Fore Finger: Points in Direction of Magnetic Field (Upwards)

Middle Finger: Points in Direction of Current (East)

Thumb: Points in Direction of Force (Southwards)

Hence, it is clear that the Alpha-particle has to be projected towards East..

Answer 2

Answer:

The direction of the flow of current in a current-carrying wire placed in a magnetic field is given by Fleming's left-hand rule. The second finger gives the direction of the electric current.