Let's say a laboratory room has very strong magnetic field upwards i.e. towards the ceiling. An electron gun is fired along a line from one of the vertical walls to the opposite wall. Then, It will-

hit the other wall along the same line

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hit the ceiling

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hit the ground

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hit the wall on the left side of shooter

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Solution

The correct option is D
hit the wall on the left side of shooter

The answer can be found out using Fleming's left-hand rule. But in this case, the direction of movement of current is opposite to the direction of flow of current.

The electrons move towards the wall which is on left side to the shooter.

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