Question

An α- particle enters a uniform magnetic field at the right angle vertically downwards. The

direction of magnetic field is from west to east.Stating the name of relevant principle and in the

direction in which the α- particle move?

a) Maxwell’s right hand thumb rule, upward direction.

b) Ampere’s swimming rule, downward direction.

c) Fleming’s left hand rule, South direction.

d) Fleming’s right hand rule, North direction.​

Answer 1

Answer:

ans1....Maxwell's right-hand thumb rule indicates the direction of magnetic field if the direction of current is known. ... When thumb points upwards

ans no.2.....Ampere's swimming rule states that if a man swims along the wire carrying current such that his face is always towards the magnetic needle with current entering his feet and leaving his head then the North Pole of the magnetic needle is always deflected towards his left hand.

Ans no.3 The direction of the force can be found using Fleming's left-hand rule. Hold your thumb, forefinger and second finger at right angles to each other: the forefinger is lined up with magnetic field lines pointing from north to south.