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Principle of Superposition

Two proton be...

Question

Two proton beams are moving in the parallel direction. Which of the following statements are correct.

A

Force between the proton beams will be attractive

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B

Magnetic force between proton beams will be attractive

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C

Repulsive force will be greater than attractive forces

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D

Magnetic and electrostatic forces will cancel each other

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Solution

The correct options are
B Magnetic force between proton beams will be attractive
C Repulsive force will be greater than attractive forces
Assuming sign convention, protons flowing in the same direction have attractive magnetic forces because of Maxwell's cork screw rule however, electrostatic repulsion forces between like charges are greater than the attractive magnetic forces.

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