When an electron moves through a magnetic field, its speed will

decrease.

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increase.

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remain the same.

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increase first and then decrease.

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Solution

The correct option is C remain the same.
The work done by magnetic force on any moving charge particle is zero because magnetic force acts perpendicular to the direction of motion. Therefore speed will remain same.

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When an electron moves through a magnetic field, its speed will

The correct option is C remain the same.The work done by magnetic force on any moving charge particle is zero because magnetic force acts perpendicular to the direction of motion. Therefore speed will remain same.

The correct option is C remain the same.
The work done by magnetic force on any moving charge particle is zero because magnetic force acts perpendicular to the direction of motion. Therefore speed will remain same.