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Two proton beams are moving in the parallel direction. Which of the following statements are correct. This question has multiple correct options

1. Force between the proton beams will be attractive
2. Magnetic force between proton beams will be attractive
3. Repulsive force will be greater than attractive forces
4. Magnetic and electrostatic forces will cancel each other

Correct answer: Repulsive force will be greater than attractive forces

Solution

Two proton beams repel electrically because like charges repel. Since they move in the same direction, each beam also creates a magnetic field that attracts the other beam, but this magnetic attraction is weaker than the electrostatic repulsion, so the net force remains repulsive.

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