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A laboratory has very strong magnetic field upwards, i.e. towards the ceiling. An electron gun is fired towards a wall. The electron will:
A Laboratory Has Very Strong Magnetic Field Upwards, I.e. To...
Options:
A .  Hit the other wall along the same line.
B .  Hit the ceiling.
C .  Hit the ground.
D .  Hit the wall on the left side of the shooter.
Answer: Option D
:
D
The answer can be found out using Fleming's left-hand rule:
According to the order:Thumb - Force, Forefinger is Magnetic Field, Middle finger- Current. The direction of current is always opposite to the direction of flow of electrons.
The electrons will move towards the wall which is on the left side of the shooter.
A Laboratory Has Very Strong Magnetic Field Upwards, I.e. To...

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